'Fail' in the Bible

And if any man said unto him, Let them not fail to burn the fat presently, and then take as much as thy soul desireth; then he would answer him, Nay; but thou shalt give it me now: and if not, I will take it by force.

And the man of thine whom I shall not cut off from mine altar, shall be to cause thine eyes to fail and to grieve thy soul; and all the increase of thy house shall die in their vigour.

Eli's eyes had begun to fail, so that he was unable to see well. At that time he was lying down in his place,

As Samuel grew, the LORD was with him and did not let any of Samuel's predictions fail.

And David said to Saul, Let no man's heart fail because of him; thy servant will go and fight with this Philistine.

And David said unto Jonathan, Behold, to morrow is the new moon, and I should not fail to sit with the king at meat: but let me go, that I may hide myself in the field unto the third day at even.

{So may Yahweh punish Jonathan and more} if {my father decides to do you harm} and if {I fail to disclose it to you} and send word to you that you can go safely. And may Yahweh be with you, as he has been with my father.

If I remain alive, don't fail to show me the LORD's gracious love so that I don't die.

And David inquired at the LORD, saying, Shall I pursue after this troop? shall I overtake them? And he answered him, Pursue: for thou shalt surely overtake them, and without fail recover all.