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

Deuteronomy 32:27
Were it not that I feared the wrath of the enemy, lest their adversaries should behave themselves strangely, and lest they should say, Our hand is high, and the LORD hath not done all this.

1 Chronicles 19:13
Be of good courage, and let us behave ourselves valiantly for our people, and for the cities of our God: and let the LORD do that which is good in his sight.

Psalms 101:2
I will behave myself wisely in a perfect way. O when wilt thou come unto me? I will walk within my house with a perfect heart.

Isaiah 3:5
And the people shall be oppressed, every one by another, and every one by his neighbour: the child shall behave himself proudly against the ancient, and the base against the honourable.