Remember that the worth of souls is great in the sight of God. -D&C 18:10
I know that which the Lord hath commanded me, and I glory in it. I do not glory of myself, but I glory in that which the Lord hath commanded me; yea, and this is my glory, that perhaps I may be an instrument in the hands of God to bring some soul to repentance; and this is my joy. -Alma 29:9