and sleep = sleep at once. This reference is to 2Sa_17:2. See note there.
makest = wilt make.
safety = confidence.
To the chief Musician. See App-64.
upon Nehiloth; better, nehaloth = concerning inheritances. Referring to Jehovah's favour as being the true inheritance of godly Israelites, as shown in verses: Psa_4:3, Psa_4:6, Psa_4:7. Compare Psa_144:12-15, the other Nehaloth Psalm. See App-65.