Commentators explain that this verse connects outward actions to an inward posture. The purpose of obeying the law is to demonstrate a proper reverence for God's "glorious and fearful name." True obedience, scholars note, flows from a heart that holds God in awe, not merely from a desire to follow rules. As Matthew Henry puts it, if we do not willingly fear His name, we will be made to feel His fearful plagues.