It is no mistake that Mormon’s discussion of faith should lead to Christ’s statement that “ye shall have power to do whatsoever thing is expedient in me.” Even though the context has been about miracles, these miracles are those that come when we exercise faith. Again, English doesn’t have a verb form for faith, but it would really be helpful here. However, it is implied that faith and power are made equivalent. Faith is power, not in knowledge, but in doing—in acting upon our agency.
With that beginning in verse 33, Mormon immediately moves to what is required to have a faith that is powerful: “Repent all ye ends of the earth.” Faith is to be exercised in principles of Godliness, and those principles require that we come to Christ having repented of the sins, or any habit, or beliefs, or intentions, or social stigmas, that might have kept us from those divine principles. We repent, signaling a willingness to change. Just as faith is a principle of action, repentance is also a principle of action, one that is a prerequisite to exercising that faith.