Parallel
Psalms 120:3
Rahlfs Septuagint (1935) · Berean Standard Bible
μὴ δῷς εἰς σάλον τὸν πόδα σου μηδὲ νυστάξῃ ὁ φυλάσσων σε
121:3
He will not allow your foot to slip; your Protector will not slumber.