Teach me to do thy will (comp. Psalms 25:4, Psalms 25:5; Psalms 139:24). For thou art my God. Therefore my Guide and Teacher. Thy spirit is good; i.e. gracious and merciful. Lead ms into the land of uprightness; rather, along a land of smoothness.
Some critics unite the last two clauses, and translate, "Let thy good Spirit lead me along a land of smoothness"—"conduct me," i.e. over smooth ground, where I need not stumble.