Why do I tear my flesh with my teeth, and carry my soul in my hands?

I take

Job 18:4 Thou that destroyest thy soul in thy fury, shall the earth be forsaken for thee, and shall rocks be removed out of their place?

Ecclesiastes 4:5 The fool foldeth his hands together, and eateth his own flesh, saying:

Isaiah 9:20 And he shall turn to the right hand, and shall be hungry: and shall eat on the left hand, and shall not be filled: every one shall eat the flesh of his own arm: Manasses Ephraim, and Ephraim Manasses, and they together shall be against Juda.

Isaiah 49:26 And I will feed thy enemies with their own flesh: and they shall be made drunk with their own blood, as with new wine: and all flesh shall know, that I am the Lord that save thee, and thy Redeemer the Mighty One of Jacob.

and put

Judges 12:3 And when I saw this, I put my life in my own hands, and passed over against the children of Ammon and the Lord delivered them into my hands. What have I deserved, that you should rise up to fight against me?

1 Samuel 19:5 And he put his life in his hand, and slew the Philistine, and the Lord wrought great salvation for all Israel. Thou sawest it and didst rejoice. Why therefore wilt thou sin against innocent blood, by killing David, who is without fault?

1 Samuel 28:21 And the woman came to Saul, (for he was very much troubled) and said to him: Behold thy handmaid hath obeyed thy voice, and I have put my life in my hand: and I hearkened unto the words which thou spokest to me.

Psalm 119:109 My soul is continually in my hands: and I have not forgotten thy law.