Psalm 127:1-5 ESV

[1] Unless the LORD builds the house, those who build it labor in vain. Unless the LORD watches over the city, the watchman stays awake in vain. [2] It is in vain that you rise up early and go late to rest, eating the bread of anxious toil; for he gives to his beloved sleep. [3] Behold, children are a heritage from the LORD, the fruit of the womb a reward. [4] Like arrows in the hand of a warrior are the children of one's youth. [5] Blessed is the man who fills his quiver with them! He shall not be put to shame when he speaks with his enemies in the gate.