"He will not let your foot slip - he who watches over you will not slumber;"
God can be compared to our night light. It's always burning and never needs batteries.

Check out the 1965 Bible in Basic English Version for these two verses in Psalm 121.
Psa 121:7-8
The Lord will keep you safe from all evil; he will take care of your soul. The Lord will keep watch over your going out and your coming in, from this time and for ever.

This is the assurance that all believers have. No matter where we are or what we do, our eternal security is assured. No evil will endanger our salvation. Nothing happens to us in this life that does not pass through the hand of God first. Of course in the heavenly realm we will be safe forever from every kind of evil. How comforting is it that the Lord watches over us at all times and forever!

"Teach me to do your will, for you are my God; may your good Spirit lead me on level ground."
He leads us on level ground. He will not let our foot slip. He watches over us.

"O Lord, what is man that you care for him, the son of man that you think of him?"
This creator of the vast universe and beyond, cares enough about us to be our night light? AMAZING!