What does Matthew 19:12 mean?

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.

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.

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.

For there are men who, from birth, were without sex: and there are some who were made so by men: and there are others who have made themselves so for the kingdom of heaven. He who is able to take it, let him take it.

for there are eunuchs who from the mother's womb were so born; and there are eunuchs who were made eunuchs by men; and there are eunuchs who kept themselves eunuchs because of the reign of the heavens: he who is able to receive <FI> it<Fi> --let him receive.'

For there are eunuchs, who were born so from their mothers womb: and there are eunuchs, who were made so by men: and there are eunuchs, who have made themselves eunuchs for the kingdom of heaven. He that can take, let him take it.

for there are eunuchs which have been born thus from [their] mother's womb; and there are eunuchs who have been made eunuchs of men; and there are eunuchs who have made eunuchs of themselves for the sake of the kingdom of the heavens. He that is able to receive [it], let him receive [it].