John 15
1 “I am the true vine, and My Father is the vinedresser. 2 Every branch in Me that does not bear fruit He takes away; and every branch that bears fruit He prunes, that it may bear more fruit. 3 You are already clean because of the word which I have spoken to you. 4 Abide in Me, and I in you. As the branch cannot bear fruit of itself, unless it abides in the vine, neither can you, unless you abide in Me.
5 “I am the vine, you are the branches. He who abides in Me, and I in him, bears much fruit; for without Me you can do nothing. 6 If anyone does not abide in Me, he is cast out as a branch and is withered; and they gather them and throw them into the fire, and they are burned. 7 If you abide in Me, and My words abide in you, you will ask what you desire, and it shall be done for you. 8 By this My Father is glorified, that you bear much fruit; so you will be My disciples.
Galatians 5:22-23
22 But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, 23 gentleness, self-control. Against such there is no law.
Matthew 7:21-23
21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven. 22 Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’ 23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’
First, only those who are truly His children will see the kingdom of God. He knows who they are and has pointed them out to us through His word. To say you follow Christ is something radical. We didn't acquire salvation through works, but we acquired it solely by the sacrifice Jesus did on the cross. We were called into our salvation to bear fruit just like it says in the passage above, and Jesus clearly describes what happens to those who don't. To say you have believed in Jesus Christ as your saviour means you understand the price it took for you to be saved, you understand what separated you from Him (sin), and as pointed out in scripture, you understand that He is the standard to follow. He is our goal to be in this life. We can't do this on our own, that is why He sent His Holy Spirit to produce much fruit in us.
Now, the part about suicide. I will not get into the argument if you go to hell or not or if it is unforgivable etc etc. However, any person who truly knows the promises of God, who understands what is waiting for that person in eternity with Him, despite their circumstances, they should be able to give glory to God in any situation that they are in and really hesitate to suicide. Because if we had scripture in our hearts we would remember this:
Romans 8:28
28 And we know that all things work together for good to those who love God, to those who are the called according to His purpose.
Whatever the person's circumstances may be, aren't we living on this earth so that God could do His will in our lives?
Job 2:10
10 But he said to her, “You speak as one of the foolish women speaks. Shall we indeed accept good from God, and shall we not accept adversity?” In all this Job did not sin with his lips.
Romans 8:29
29 For whom He foreknew, He also predestined to be conformed to the image of His Son, that He might be the firstborn among many brethren
We are called to be conformed in the image of His son. And let me remind you something about Him. The adversity that Jesus Christ faced was unfathomable, the circumstances that He lived in, the heartbreak the true Son of God went through we would never really understand. But guess what, He was willing to go through it for all of humanity. He knew He would suffer, He knew it wouldn't be easy, He knew that those He came to save would reject Him, and He was in agony but in full obedience to the Father when He was on that cross. But guess what, He knew that He would rise from the dead. And guess what? If you have truly believed in Christ, then you also know that this life is a vapor compared to eternity. And if you truly believed that there would be no suffering, but everlasting peace and joy and that you truly will be with Him, then why end the life that God has called you to live in so that you could bear much fruit in Him, be conformed to His image, and give Him the glory in any situation?