In Psalm 125 we are exhorted to trust in God, a foundation that remains immovable throughout eternity. “Those who trust in the Lord are like Mount Zion, which cannot be moved, but abides forever. As the mountains surround Jerusalem, so the Lord surrounds his people, from this time forth and forevermore.” God’s care for those who trust in Him is greater than we can imagine.
This idea continues in Psalm 126, the sowing of seed requires trust that God will bless one’s effort, resulting in shouts of joy when the grain is harvested.
In Psalm 127 we’re reminded that our efforts require God’s input to succeed. “Unless the Lord builds the house, those who build it labor in vain.” Just as Paul relied on God to give the increase for his preaching efforts, so we need to involve God in our daily lives, living in accordance with His will, trusting that He will bless our efforts to serve Him.