No doubt that Moroni had kept the letter here recorded as a treasured reminder of his youth. He says that his father wrote it to him shortly after he, that is, Moroni, was called to the ministry of Christ.
The letter was of a personal nature, but as it deals with a subject of great importance, Moroni was constrained by the spirit of prophecy, to include it in his own writings. By that same spirit, he saw that the time would come when men, unenlightened by God's Holy Spirit, would consign innocent little children to an existence with the devil and his angels because, albeit through no fault of their own, they had not been baptized.
After rendering thanks to God that the Lord Jesus Christ had been mindful of his worthy son, and had called him to His holy work, Mormon invoked the continued blessings of the Holy One of Israel on Moroni, to the end that "through His infinite goodness and grace" Moroni would always be preserved "through the endurance of faith on His Name." It was a note that expressed a filial tenderness existing between father and son.