The psalm begins with a gesture: the pilgrim lifts his eyes to the hills and asks where his help will come from. The roads of Judah were long and carried risks of falls, robbers and heat, and the hills could inspire fear or recall the pagan shrines on the high places. The answer comes at once: his help comes from the Lord, who made heaven and earth.
From verse 3 the poem speaks of a guard on watch. God will not let the foot slip, and the one who keeps the traveler neither slumbers nor sleeps; the keeper of Israel is always awake. The verb keep appears six times in the psalm, like a refrain of protection.
Verses 5 and 6 describe the Lord as shade at the right hand: the sun will not harm by day nor the moon by night. Verses 7 and 8 widen the promise: the Lord will keep from all evil, guard the pilgrim's life and watch over his going out and his coming in, from now and forevermore.