A Song of Ascents. Of Solomon.

127:1   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.