Alma 36:24-25

Yea, and from that time even until now, I have labored without ceasing, that I might bring souls unto repentance; that I might bring them to taste of the exceeding joy of which I did taste; that they might also be born of God, and be filled with the Holy Ghost. Yea, and now behold, O my son, the Lord doth give me exceedingly great joy in the fruit of my labors