Psalms 121:7-8

The verb keep runs through this psalm six times in eight verses. It is the psalm's single idea, repeated until it sticks.

And the word covers more than protection. It is what a shepherd does with a flock, what a gardener does in Eden, what a watchman does on a wall. It carries attention as much as defence — keeping something means having it in view.

What is promised here is unusually broad, and that breadth causes trouble if you read it as a guarantee about circumstances. Pilgrims on this road were robbed. Believers get ill. From all evil cannot mean nothing bad occurs, or the psalm would have been discredited in its first year of use.

The second clause narrows it usefully: he will keep your soul. That is the thing under guarantee. Not the journey, but the traveller.

And your going out and your coming in is a Hebrew idiom for the whole of ordinary life — leaving in the morning, returning at night, the pattern of a working existence. It is a phrase about routine, not about crisis. Whatever is being watched is being watched during the unremarkable part.

The psalm opens with a question — where does my help come from — asked by someone looking up at hills that hid bandits. It answers itself, and then says the same word six times.