If you read between the lines, Jesus Christ, not Jesus Azevado, had the hots for Mary Magdalene, a woman of ill repute who was so brazen as to wash his feet with scented oil in public.
Scandalous woman.
But of course, Jesus Christ forgave her sins, much to the chagrin of the (then) modern day do-gooders. She was so taken with him that she even came snooping around the cemetery looking for him after he was crucified, but too late ... he'd already risen from the dead.
Poor Mary M., missed it again there. Probably a good thing, though. The very LAST thing that the world needs would be the GRANDSONS of God running around starting up their own branches of the Faith.
In the Bible, references to "eunuchs" are usually referring to proper eunuchs, i.e. men without working testicles. However, one needs to be more careful when looking at other historical documents, where the term "eunuch" is also used for homosexuals and transsexuals.
In any case, priesthood has often been associated with celibacy and I am sure there have been many, many in the priesthood who felt they could not control their sexual lust and used self-castration as a "solution".
In modern times, you just have to look at the news regarding the American Roman Catholics to see that the "celibate" ideal has created a warped priesthood. Not only has there been widespread sexual abuse, but the archdioscese still does not recognize how bad a crime that is. The worst that some offenders got was to become clerical workers, still for the church. There is a good SouthPark episode where the SouthPark priest goes to the Vatican to get help regarding the abuse problem. He says, "We have a problem in America with boys reporting sexual abuse by the Church". The assembly replies, "Yes, we must stop them from reporting." It is not far from the truth.
The problem is that the Church is using forgiveness as an excuse for letting these abusers continue to work for the Church. However, forgiveness just means that you don't hate someone and that you understand that humankind has weaknesses. But that does not mean that you keep letting them hold positions where they can continue to act out sexually!
Anyway, back to the topic -- the ideal of celibacy has certainly led to castration in the Church.
An interesting thing about castration is that it is similar to the theological problems with suicide. If you promise a Heaven after one dies, then why not kill oneself and go straight there? Well, so suicide has to be a sin. Similarly, if you say that Heaven is easier to attain if celibate, then why not castrate oneself to make it easier?
In the end, I think that if there is a God, he/she/it would want us to live "naturally" in the physical configuration that was given to us -- even if that physical configuration is difficult for us. The rewards of Heaven are given BECAUSE of the struggle against sin and strife. Escaping strife by suicide, or escaping sin by castration, should not be interpretted as paths to Heaven.
Therefore, I think Jesus' quote above indicates that eunuchs can still achieve Heaven, but I am pretty sure that it is not an advocation of castration for anyone.