Matthew 19:11

But he said unto them, Not all men can receive this saying, but they to whom it is given. For there are eunuchs, that were so born from their mother's womb: and there are eunuchs, that were made eunuchs by men: and there are eunuchs that made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it.

Eunuchs in ancient times were considered unworthy of being received in the work of God, but Christ opened the kingdom to eunuchs also, and allowed in this place, but did not command, celibacy. This was in answer to the disciples' suggestion that it was not expedient to marry. Christ sanctified and blessed the marriage covenant by being present and performing his first wonder at a wedding in Cana of Galilee. This passage shows that eunuchs were also to be admitted to the kingdom of heaven. The conversion of the Ethiopian eunuch in Acts 8 is significant in this context.