From this verse in Matthew 19, it may appear that the Savior approved of celibacy or self-mutilation:
"For there are some eunuchs, which were so born from their mother’s womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven’s sake. He that is able to receive it, let him receive it." (Matthew 19:12)
However, modern apostles and prophets have clarified “that marriage between a man and a woman is ordained of God and that the family is central to the Creator’s plan for the eternal destiny of His children. … God’s commandment for His children to multiply and replenish the earth remains in force” (“The Family: A Proclamation to the World,” Ensign or Liahona, Nov. 2010, 129).
Elder Bruce R. McConkie (1915–85) of the Quorum of the Twelve Apostles explained that anciently some people held the false belief that a life of celibacy was to be sought after: “Apparently those who made themselves eunuchs were men who in false pagan worship had deliberately mutilated themselves in the apostate notion that such would further their salvation. It is clear that such was not a true gospel requirement of any sort. There is no such thing in the gospel as wilful emasculation; such a notion violates every true principle of procreation and celestial marriage” (Doctrinal New Testament Commentary, 3 vols. [1965–73], 1:549).
What did Christ mean when he said, "He that is able to receive it, let him receive it."?