Alma 13:18

but Melchizedek having exercised mighty faith, and received the office of the High Priesthood, according to the holy order of God, did preach repentance unto his people.—And behold, they did repent; and Melchizedek did establish peace in the land in his days; therefore he was called the Prince of Peace, for he was the king of Salem; and he did reign under his father.

But Melchizedek had great faith. He received the job of high priest by God’s holy order. He taught his people to turn away from sin. They did turn away from sin. Melchizedek brought peace to the land during his time as king. That is why he was called the Prince of Peace. He was the king of Salem. He ruled under his father.

But Melchizedek showed powerful faith. After receiving the office of high priest according to God’s holy order, he preached repentance to his people. And they repented! Melchizedek brought peace to the land during his time. That’s why he was called the Prince of Peace—he was king of Salem, and he ruled under his father.