Verses with the word conceal in the Old Testament (6 verses):

Genesis 37:26
And Judah said unto his brethren, What profit is it if we slay our brother, and conceal his blood?

Deuteronomy 13:8
Thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him:

Job 27:11
I will teach you by the hand of God: that which is with the Almighty will I not conceal.

Job 41:12
I will not conceal his parts, nor his power, nor his comely proportion.

Proverbs 25:2
It is the glory of God to conceal a thing: but the honour of kings is to search out a matter.

Jeremiah 50:2
Declare ye among the nations, and publish, and set up a standard; publish, and conceal not: say, Babylon is taken, Bel is confounded, Merodach is broken in pieces; her idols are confounded, her images are broken in pieces.