'Slips' in the Bible

as when a man goes into the forest with his neighbor to chop wood, and his hand fetches a stroke with the axe to cut down the tree, and the head slips from the handle, and lights on his neighbor, so that he dies; he shall flee to one of these cities and live:

In the thought of him who is at ease there is contempt for misfortune. It is ready for them whose foot slips.

For I said, "Don't let them gloat over me, or exalt themselves over me when my foot slips."