"Through the preaching of"

1. Alma 23: 6
     6 And as sure as the Lord liveth, so sure as many as believed, or as many as were brought to the knowledge of the truth, through the preaching of Ammon and his brethren, according to the spirit of revelation and of prophecy, and the power of God working miracles in them—yea, I say unto you, as the Lord liveth, as many of the Lamanites as believed in their preaching, and were converted unto the Lord, never did fall away.
2. Hel. 15: 4
     4 But behold my brethren, the Lamanites hath he hated because their deeds have been evil continually, and this because of the iniquity of the tradition of their fathers. But behold, salvation hath come unto them through the preaching of the Nephites; and for this intent hath the Lord prolonged their days.