IF someone commits suicide and has not truly accepted Jesus as his Savior, they are as hell bound as the next dead unrepentant sinner. IF that same someone had already truly accepted the Lord, then NO ONE, not even ones self, “can snatch them out of my Father’s hand.” Jn 10:29b NIV
The only unforgivable sin is refusing the grace of His salvation.
There are those who did once claim to be Christians, but then say that they are not. Now they refuse to admit that Jesus is the Christ. They did not really believe in the Lord Jesus and they do not know Him.
The day will come when they will have to stand before God. Then Christ will deny them. He will say that He does not know them. They will not live with Him in that day.
James 2:18
Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew thee my faith by my works.
What about those who wish to believe but were never able to then the despair becomes so horrible that they commit suicide? Do they still go to hell?