Unless the Lord builds the house, the builders labor in vain

Psalm 127 1-5
Unless the Lord builds the house, the builders labor in vain. Unless the Lord watches over the city, the guards stand watch in vain.
In vain you rise early and stay up late, toiling for food to eat - for he grants sleep to those he loves.
Children are a heritage from the Lord, offspring a reward from him.
Like arrows in the hands of a warrior are children born in one’s youth.
Blessed is the man whose quiver is full of them, They will not be put to shame when they contend 爭議with their opponents in court.
Hebrew title, ;By Solomon’. This is a ‘wisdom’ psalm. Human effort is of no avail if God is not in it, The connection between verses 2,3 would seem to be that God’s normal provision comes through the gift of sons, the key to the family’s Future financial security.
Dispute and business deals were settled at the city gate. Where the grown-up sons support their father in maintaining the family’s interests.
Why?
Under God’s blessing and God’s love will be property and welcome.
Without God’s blessing everything he has done in vain.
Have more children is reward from God. For support their family future financial security.
How?
How great may worship God in church with many brother and sister.