Verses with the word spareth in the Old Testament (4 verses):

Proverbs 13:24
He that spareth his rod hateth his son: but he that loveth him chasteneth him betimes.

Proverbs 17:27
He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.

Proverbs 21:26
He coveteth greedily all the day long: but the righteous giveth and spareth not.

Malachi 3:17
And they shall be mine, saith the LORD of hosts, in that day when I make up my jewels; and I will spare them, as a man spareth his own son that serveth him.