Matthew Henry’s Modern English CommentaryPsalms 121

God Our KeeperThis psalm teaches us to trust God as our powerful and all-sufficient helper. David shows that we should not put our trust in people or things, no matter how strong they seem. He asks, Shall I lift up my eyes to the hills? and realizes that true help does not come from mountains or important people, but from God alone (Jeremiah 3:23 ). We must look past earthly things and focus on God, who is the real source of our help. David may have also meant the hills where the temple stood, showing his desire for God’s special presence. Our help comes from the Lord

v. 3–4: God is always watching over His people. He will not suffer thy foot to be moved: he that keepeth thee will not slumber. Behold, he that keepeth Israel shall neither slumber nor sleep (Psalm 121:3-4 ). God is always awake and alert, protecting us at all times, both day and night.

v. 5: The Lord

v. 6: The sun shall not smite thee by day, nor the moon by night . God protects us from all dangers, both visible and invisible, during the day and at night. Nothing, not even the sun’s heat or the cold of night, can harm us if God is our protector.

v. 7: The Lord

v. 8: The Lord