A Song of Ascents.
 I lift up my eyes to the hills. From where does my help come?  My help comes from the LORD, who made heaven and earth.
 He will not let your foot be moved; he who keeps you will not slumber.  Behold, he who keeps Israel will neither slumber nor sleep.
 He will not let your foot be moved.
He – The LORD He – the maker of heaven and earth.
He is our keeper.
The Greek translation of the Hebrew text (Septuagint or Lxx) renders shamar with the Greek verb phulasso.
Phulasso (5442) means to watch, to carry out the function as a military guard or sentinel (cp Ac 23:35, 28:16), to keep watch, to have one's eye upon lest one escape, to guard a person that he might remain safe (from violence, from another person or thing, from being snatched away, from being lost). The NT uses phulasso of guarding truth (eg, 1Ti 5:21, 6:20, 2Ti 1:14-note)
Phulasso is the verb used to describe the shepherds “keeping watch (phulasso) over their flock by night (Lk 2:8), which congers up the image of savage wolves seeking to devour the helpless sheep. Elsewhere we read of the Good Shepherd, the Great Shepherd Who keeps watch over His sheep.
“He who keeps you will not slumber.”
He who keeps you What is it to be “kept” by God?
He keeps us secure. He won't let your foot be moved.
Illustration. Helping Noah climb on the groynes at the beach – rocky – he walks, tightly gripping onto my hand – just in case at some point his feet slip – and when they do, I'm holding on to him – so worst case scenario, he ends up dangling from my hands! I take his strength.
Moving feet. Their feet slip – unbelievers who think their life is going well [REF] – but the LORD won't let our foot slip.
Who is “your”? The people of God – more than that – the very people who are looking to God for help. If we look anywhere else or to anyone else for our help, our foot will slip, because nothing is able to hold our footing successfully. God is the only one who can come through with the promise of “he will not let your foot be moved.” He holds us in place.
He keeps us with constant attentiveness “He who keeps you will not slumber”
“He who keeps Israel will neither slumber nor sleep.”
What is the difference between slumbering and sleeping?
God is working for us. Non-stop. Even when we miss a step, God doesn't.