Verses with the word lose in the Old Testament (5 verses):

Judges 18:25
And the children of Dan said unto him, Let not thy voice be heard among us, lest angry fellows run upon thee, and thou lose thy life, with the lives of thy household.

1 Kings 18:5
And Ahab said unto Obadiah, Go into the land, unto all fountains of water, and unto all brooks: peradventure we may find grass to save the horses and mules alive, that we lose not all the beasts.

Job 31:39
If I have eaten the fruits thereof without money, or have caused the owners thereof to lose their life:

Proverbs 23:8
The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.

Ecclesiastes 3:6
A time to get, and a time to lose; a time to keep, and a time to cast away;