Verses with the word meekness in the Old Testament (2 verses):

Psalms 45:4
And in thy majesty ride prosperously because of truth and meekness and righteousness; and thy right hand shall teach thee terrible things.

Zephaniah 2:3
Seek ye the LORD, all ye meek of the earth, which have wrought his judgment; seek righteousness, seek meekness: it may be ye shall be hid in the day of the LORD's anger.