Now, about the biblical requirement to separate unrepentant sinners from the congregation?
Tdrew why unrepenting sinners...All people that CONTINUE in sin is unrepenting sinners... Tell me what sin is there you do God cannot take away from you? What sin is there that YOU CANNOT REPENT AND STOP DOING...
There is a difference of attitude. There are those who do not care, they sin without remorse. It is called wilfull sinning...
Heb 10:26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Then there are those who are of a repentant attitude...
1Jn 2:1 My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
1Jn 2:2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.
Heb 4:15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.
Heb 4:16 Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.
David was one of those...
Psa 103:2 Bless the LORD, O my soul, and forget not all his benefits:
Psa 103:3 Who forgiveth all thine iniquities; who healeth all thy diseases;
Psa 103:4 Who redeemeth thy life from destruction; who crowneth thee with lovingkindness and tender mercies;
Psa 51:1 To the chief Musician, A Psalm of David, when Nathan the prophet came unto him, after he had gone in to Bathsheba. Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.
Psa 51:2 Wash me throughly from mine iniquity, and cleanse me from my sin.
Psa 51:3 For I acknowledge my transgressions: and my sin is ever before me.
Psa 51:4 Against thee, thee only, have I sinned, and done this evil in thy sight: that thou mightest be justified when thou speakest, and be clear when thou judgest.
Psa 51:5 Behold, I was shapen in iniquity; and in sin did my mother conceive me.
Psa 51:6 Behold, thou desirest truth in the inward parts: and in the hidden part thou shalt make me to know wisdom.
Psa 51:7 Purge me with hyssop, and I shall be clean: wash me, and I shall be whiter than snow.
Psa 51:8 Make me to hear joy and gladness; that the bones which thou hast broken may rejoice.
Psa 51:9 Hide thy face from my sins, and blot out all mine iniquities.
Psa 51:10 Create in me a clean heart, O God; and renew a right spirit within me.
Psa 51:11 Cast me not away from thy presence; and take not thy holy spirit from me.
Psa 51:12 Restore unto me the joy of thy salvation; and uphold me with thy free spirit.
Psa 51:13 Then will I teach transgressors thy ways; and sinners shall be converted unto thee.
Psa 51:14 Deliver me from bloodguiltiness, O God, thou God of my salvation: and my tongue shall sing aloud of thy righteousness.
Psa 51:15 O Lord, open thou my lips; and my mouth shall shew forth thy praise.
Psa 51:16 For thou desirest not sacrifice; else would I give it: thou delightest not in burnt offering.
Psa 51:17 The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise.
2Sa 12:7 And Nathan said to David, Thou art the man. Thus saith the LORD God of Israel, I anointed thee king over Israel, and I delivered thee out of the hand of Saul;
2Sa 12:8 And I gave thee thy master's house, and thy master's wives into thy bosom, and gave thee the house of Israel and of Judah; and if that had been too little, I would moreover have given unto thee such and such things.
2Sa 12:9 Wherefore hast thou despised the commandment of the LORD, to do evil in his sight? thou hast killed Uriah the Hittite with the sword, and hast taken his wife to be thy wife, and hast slain him with the sword of the children of Ammon.
2Sa 12:10 Now therefore the sword shall never depart from thine house; because thou hast despised me, and hast taken the wife of Uriah the Hittite to be thy wife.
2Sa 12:11 Thus saith the LORD, Behold, I will raise up evil against thee out of thine own house, and I will take thy wives before thine eyes, and give them unto thy neighbour, and he shall lie with thy wives in the sight of this sun.
2Sa 12:12 For thou didst it secretly: but I will do this thing before all Israel, and before the sun.
2Sa 12:13 And David said unto Nathan, I have sinned against the LORD. And Nathan said unto David, The LORD also hath put away thy sin; thou shalt not die.
David was deeply repentant. But all sin has consequences...
2Sa 12:14 Howbeit, because by this deed thou hast given great occasion to the enemies of the LORD to blaspheme, the child also that is born unto thee shall surely die.