World Wide Study Bible
a Bible passage
3. this is—the love of God consists in this.
not grievous—as so many think them. It is "the way of the transgressor" that "is hard." What makes them to the regenerate "not grievous," is faith which "overcometh the world" (1Jo 5:4): in proportion as faith is strong, the grievousness of God's commandments to the rebellious flesh is overcome. The reason why believers feel any degree of irksomeness in God's commandments is, they do not realize fully by faith the privileges of their spiritual life.