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

1 Samuel 12:2
And now, behold, the king walketh before you: and I am old and grayheaded; and, behold, my sons are with you: and I have walked before you from my childhood unto this day.

Ecclesiastes 11:10
Therefore remove sorrow from thy heart, and put away evil from thy flesh: for childhood and youth are vanity.