Matthew 19:11-12

11And he said to them, All cannot receive this word, but those to whom it has been given;

12for 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].