The only mention of suicide is that of Judas Iscariot, who killed himself from devastation after betraying Jesus. The only unforgiveable sin that is mentioned is discredit against the Holy Spirit.
One comes to mind: "About that time Judas, who betrayed Him, when he saw that Jesus had been condemned to die, changed his mind and deeply regretted what he had done... Then he threw the money onto the floor of the Temple and went out and HANGED HIMSELF." (Matt.27:3-5 LVB Living Bible)
There were also some of God's prophets who "wished they were dead." But, they wished for God to take it, to release them from their burdens. The "spirit" of defeat and suicide was with them... but they didn't do it.
Elijah, who was burned-out and found himself on Jezebel's hit list, was one: "...he went alone into the wilderness, traveling all day, and sat under a broom bush and PRAYED THAT HE MIGHT DIE, 'I've had enough, ' he told the Lord. "TAKE AWAY MY LIFE. I've got to die sometime, and it might as well be now." (I Kings 19:4 LVB)
Jonah was another: "...'PLEASE KILL ME, LORD; I'D RATHER BE DEAD than alive [when nothing that I told them happens].' Then the Lord said, 'Is it right to be angry about this? So Jonah went out sat sulking on the east side of the city..." (Jonah 4:3-5 LVB)
"...'Is it right for you to be angry because the plant died?' 'Yes,' Jonah said, 'it is; it is right for me TO BE ANGRY ENOUGH TO DIE!' Then the Lord said, 'You feel sorry for yourself when your shelter is destroyed, though you did no work to put it there, and it is, at best, short-lived. And why shouldn't I feel sorry for a great city like Nineveh with its 120,000 people in utter spiritual darkness, and all its cattle?'" (verses 9-11)
AnswerThere is no specific scripture such as "Thou shalt not blow your brains out" prohibiting suicide, but none is needed.
This is because Man was created in the image of God:-
Genesis 1
26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
27 So God created man in his own image, in the image of God created he him; male and female created he them.
Genesis 9:6:-
6 Whoso sheddeth man's blood, by man shall his blood be shed: for in the image of God made he man.
Murder is prohibited in the 6th of the 10 Commandments:-
Exodus 20 [NKJV, NASB, NET]
v.6. You shall not murder.
Since Suicide is self-murder, that means it is also prohibited.
Our body is the temple of the Holy Spirit and belongs to God:-
1 Corinthians 6 [NKJV]
19 Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own?
20 For you were bought at a price; therefore glorify God in your body and in your spirit, which are God's.
The Bible teaches us to trust, depend on, and believe in God throughout. For someone to take their own life would show no faith in God.
(And it doesn't matter whether a person is a Christian or not: all bodies belong to God to whom all are accountable for how they are used or misused.)
Although the prophets, apostles, and Jesus Christ were persecuted, tortured, and put to death; they did not commit suicide for an "easy out." They "fought the good fight" to the end:-
2Timothy 4 [NKJV]
5 But you be watchful in all things, endure afflictions, do the work of an evangelist, fulfill your ministry.
6 For I am already being poured out as a drink offering, and the time of my departure is at hand.
7 I have fought the good fight, I have finished the race, I have kept the faith.
8 Finally, there is laid up for me the crown of righteousness, which the Lord, the righteous Judge, will give to me on that Day, and not to me only but also to all who have loved His appearing.
The Bible is against self-murder or suicide
no.
The Bible says very clearly that rebellion is like witchcraft. It says that like witchcraft is a sin, so is rebellion a sin.
He doesn't have one. He doesn't exist. But according to scripture, it is a sin to take ones own life.
Nowhere in the Bible does it say that.
The Bible says you can't not cross anything out from the Bible.
When it seems to be elements that contradict what the bible says you have to pray for forgiveness and repent of your sin
Romans
Romans 3:23
None. The Bible does not teach ethics but salvation from sin through Jesus Christ.
I do not know what you mean by "eternal sin", but what I do know is that, suicide is indeed a sin.
No problem; they often do, but we have the precious blood of Jesus to make us clean from sin, as the Scripture says: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin. (1 John 1.7)
All the actions of sin lead to death; as the Bible says in Ezekial 18.20. The soul that sinneth, it shall die. And as the Bible says in1 John 3.4, sin is the transgression of the law.