Verses with the word companion in the Old Testament (11 verses):

Exodus 32:27
And he said unto them, Thus saith the LORD God of Israel, Put every man his sword by his side, and go in and out from gate to gate throughout the camp, and slay every man his brother, and every man his companion, and every man his neighbour.

Judges 14:20
But Samson's wife was given to his companion, whom he had used as his friend.

Judges 15:2
And her father said, I verily thought that thou hadst utterly hated her; therefore I gave her to thy companion: is not her younger sister fairer than she? take her, I pray thee, instead of her.

Judges 15:6
Then the Philistines said, Who hath done this? And they answered, Samson, the son in law of the Timnite, because he had taken his wife, and given her to his companion. And the Philistines came up, and burnt her and her father with fire.

1 Chronicles 27:33
And Ahithophel was the king's counsellor: and Hushai the Archite was the king's companion:

Job 30:29
I am a brother to dragons, and a companion to owls.

Psalms 119:63
I am a companion of all them that fear thee, and of them that keep thy precepts.

Proverbs 13:20
He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.

Proverbs 28:7
Whoso keepeth the law is a wise son: but he that is a companion of riotous men shameth his father.

Proverbs 28:24
Whoso robbeth his father or his mother, and saith, It is no transgression; the same is the companion of a destroyer.

Malachi 2:14
Yet ye say, Wherefore? Because the LORD hath been witness between thee and the wife of thy youth, against whom thou hast dealt treacherously: yet is she thy companion, and the wife of thy covenant.