The Bible does not say you will go to Hell if you kill yourself. Only one thing sends you to Hell: He that believeth on him is not condemned; but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. John 3:18. So, humans are condemned already having inherited sin from Adam, and the ONLY remedy is belief in, or trust in what Jesus did on the cross to pay for those sins-past, present, and future. (all your sins were future when he died for them) So if you have at some point in time (behold now is the DAY of salvation) trusted in Jesus, then you are his child, adopted, and secure in his hands, and nothing can pluck you out, for God is greater than all, and I am not greater than he is. Salvation is a TOTALY FREE GIFT, see Romans 5:16-18, its called free gift, or gift 5 times. Now the rewards and 'treasures in heaven' will differ for each individual according to how he lives after accepting the free gift. So one who commits suciide may lose some reward, yet he himself is saved.
Verily, verily I say He that heareth my word, and believeth on him that sent me, HATH everlasting life, and shall not come into condemnation, but IS passed from death to life. John 5:24
We see from this verse, that at the moment one believes in Jesus, he HATH, not might have someday, if...but HAS RIGHT NOW, not just life, but EVERLASTING LIFE, (God would be a liar to say he gave you everlasting life if you could lose it), and shall not come into condemnation-you will not lose everlasting life and be back under God's judgement, but IS PASSED from death to life- you are, now passed from death to life- from a child of darkness, of the devil, to a child of light, of God. And though he may correct us, and we may not have fellowship with him, we are always his children, are always in relationship with him, from the moment we first believed. Haleluia!