2 Timothy 2:11 It is a faithful saying: For if we be dead with him, we shall also live with him: 12 If we suffer, we shall also reign with him: if we deny him, he also will deny us: 13 If we believe not, yet he abideth faithful: he cannot deny himself.
So we have here, believers that no longer believes and even though they deny Him and they will be denied by Him, yet though they no longer believe, He abides in them still for He cannot deny Himself.
Below from the same chapter is just one example of how a believer can err from the truth and have his faith overthrown, and since there are other lies that can do that too, it is applicable to that as well.
2 Timothy 2:18 Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some. 19 Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are his. And, let every one that nameth the name of Christ depart from iniquity. 20 But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour. 21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master's use, and prepared unto every good work.
Do note verses 20-21 as they speak of two kinds of vessels in His House: the ones unto honour and the other ones unto dishonour, but they are still in His House.
One important note to consider is that those that deny Him, will be denied, and therefore those that do not depart from iniquity will be denied how? From attending the Marriage Supper of the Lamb?
If this is the judgment God wants believers to practise for excommunication in maintaining proper fellowship and care for the body of Christ, then will not God do the same at the rapture event?
Do note verse 5 below in what excommunication and being left behind from the rapture will do.
1 Corinthians 5:4 In the name of our Lord Jesus Christ, when ye are gathered together, and my spirit, with the power of our Lord Jesus Christ, 5 To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. 6 Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump? 7 Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: 8 Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth. 9 I wrote unto you in an epistle not to company with fornicators: 10 Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world. 11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolator, or a railer, or a drunkard, or an extortioner; with such an one no not to eat. 12 For what have I to do to judge them also that are without? do not ye judge them that are within? 13 But them that are without God judgeth. Therefore put away from among yourselves that wicked person.
Note how verse 8 and the latter part of verse 11 shows what will happen when believers do not depart from iniquity since the Marriage Supper will be done in sincerity & in truth as we will not be eating with unrepentant believers at the Marriage Supper.
So don't write former believers or unrepentant believers off as if they were never saved.
2 Timothy 2:24 And the servant of the Lord must not strive; but be gentle unto all men, apt to teach, patient, 25 In meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth; 26 And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
2 Timothy 2:10 Therefore I endure all things for the elect's sakes, that they may also obtain the salvation which is in Christ Jesus with eternal glory.
The eternal glory that comes with our salvation which is in Christ Jesus is to attend the Marriage Supper of the Lamb as a vessel unto honour in His House.
Colossians 1:27 To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory: 28 Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus:
May the Good Shepherd help us to do this.
Matthew 18:10 Take heed that ye despise not one of these little ones; for I say unto you, That in heaven their angels do always behold the face of my Father which is in heaven. 11 For the Son of man is come to save that which was lost. 12 How think ye? if a man have an hundred sheep, and one of them be gone astray, doth he not leave the ninety and nine, and goeth into the mountains, and seeketh that which is gone astray? 13 And if so be that he find it, verily I say unto you, he rejoiceth more of that sheep, than of the ninety and nine which went not astray. 14 Even so it is not the will of your Father which is in heaven, that one of these little ones should perish. 15 Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
So we have here, believers that no longer believes and even though they deny Him and they will be denied by Him, yet though they no longer believe, He abides in them still for He cannot deny Himself.
Below from the same chapter is just one example of how a believer can err from the truth and have his faith overthrown, and since there are other lies that can do that too, it is applicable to that as well.
2 Timothy 2:18 Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some. 19 Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are his. And, let every one that nameth the name of Christ depart from iniquity. 20 But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour. 21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master's use, and prepared unto every good work.
Do note verses 20-21 as they speak of two kinds of vessels in His House: the ones unto honour and the other ones unto dishonour, but they are still in His House.
One important note to consider is that those that deny Him, will be denied, and therefore those that do not depart from iniquity will be denied how? From attending the Marriage Supper of the Lamb?
If this is the judgment God wants believers to practise for excommunication in maintaining proper fellowship and care for the body of Christ, then will not God do the same at the rapture event?
Do note verse 5 below in what excommunication and being left behind from the rapture will do.
1 Corinthians 5:4 In the name of our Lord Jesus Christ, when ye are gathered together, and my spirit, with the power of our Lord Jesus Christ, 5 To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. 6 Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump? 7 Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us: 8 Therefore let us keep the feast, not with old leaven, neither with the leaven of malice and wickedness; but with the unleavened bread of sincerity and truth. 9 I wrote unto you in an epistle not to company with fornicators: 10 Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world. 11 But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolator, or a railer, or a drunkard, or an extortioner; with such an one no not to eat. 12 For what have I to do to judge them also that are without? do not ye judge them that are within? 13 But them that are without God judgeth. Therefore put away from among yourselves that wicked person.
Note how verse 8 and the latter part of verse 11 shows what will happen when believers do not depart from iniquity since the Marriage Supper will be done in sincerity & in truth as we will not be eating with unrepentant believers at the Marriage Supper.
So don't write former believers or unrepentant believers off as if they were never saved.
2 Timothy 2:24 And the servant of the Lord must not strive; but be gentle unto all men, apt to teach, patient, 25 In meekness instructing those that oppose themselves; if God peradventure will give them repentance to the acknowledging of the truth; 26 And that they may recover themselves out of the snare of the devil, who are taken captive by him at his will.
2 Timothy 2:10 Therefore I endure all things for the elect's sakes, that they may also obtain the salvation which is in Christ Jesus with eternal glory.
The eternal glory that comes with our salvation which is in Christ Jesus is to attend the Marriage Supper of the Lamb as a vessel unto honour in His House.
Colossians 1:27 To whom God would make known what is the riches of the glory of this mystery among the Gentiles; which is Christ in you, the hope of glory: 28 Whom we preach, warning every man, and teaching every man in all wisdom; that we may present every man perfect in Christ Jesus:
May the Good Shepherd help us to do this.
Matthew 18:10 Take heed that ye despise not one of these little ones; for I say unto you, That in heaven their angels do always behold the face of my Father which is in heaven. 11 For the Son of man is come to save that which was lost. 12 How think ye? if a man have an hundred sheep, and one of them be gone astray, doth he not leave the ninety and nine, and goeth into the mountains, and seeketh that which is gone astray? 13 And if so be that he find it, verily I say unto you, he rejoiceth more of that sheep, than of the ninety and nine which went not astray. 14 Even so it is not the will of your Father which is in heaven, that one of these little ones should perish. 15 Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.