Stablish thy word unto thy servant, who [is devoted] to thy fear.
Ver. 38. Stablish thy word unto thy servant] i.e. Make good thy promise; we must by our prayers put the promises of God in suit, and God will perform them.
Who is devoted to thy fear] And so am an heir of the promises. Or, which (word) is (given) for the fear of thee, that thou mayest be feared.