"Surely I will require your lifeblood; from every beast I will require it. And from every man, from every man's brother I will require the life of man. Whoever sheds man's blood, By man his blood shall be shed, For in the image of God He made man" (Genesis 9:5-6).
Men were made in the image of God. "God created man in His own image, in the image of God He created him; male and female He created them" (Genesis 1:27).
God is the giver of life. "The God who made the world and all things in it, since He is Lord of heaven and earth, does not dwell in temples made with hands; nor is He served by human hands, as though He needed anything, since He Himself gives to all people life and breath and all things; and He made from one man every nation of mankind to live on all the face of the earth, having determined their appointed times and the boundaries of their habitation, that they would seek God, if perhaps they might grope for Him and find Him, though He is not far from each one of us; for in Him we live and move and exist, as even some of your own poets have said, 'For we also are His children'" (Acts 17:24-28).
Job did not want his life to continue, but he did not try to take his own life. "Why is light given to him who suffers, and life to the bitter of soul, who long for death, but there is none, and dig for it more than for hidden treasures, who rejoice greatly, and exult when they find the grave?" (Job 3:20-22).
Elijah also had given up, but he asked God for death instead of taking his own life. "But he himself went a day's journey into the wilderness, and came and sat down under a juniper tree; and he requested for himself that he might die, and said, "It is enough; now, O LORD, take my life, for I am not better than my fathers" " (I Kings 19:4).
Jonah was angry that God spared the Ninevites, but he asked God to take his life. "Therefore now, O LORD, please take my life from me, for death is better to me than life" (Jonah 4:3).