Whatsoever man of the descendants of Aaron who is a leper, or has a discharge; he shall not eat of the holy things, until he is clean. And whoever touches any thing that is defiled by a dead body, or a man who has had an emission of semen;
All Commentaries on Leviticus 22:4 Go To Leviticus 22
George Leo Haydock
AD 1849
And he Hence it is plain, even the Jewish priests were bound to observe continence during the time of their ministry. (Calmet)
For the same reason, the priests of the new law, who may be called at any time to perform their more sacred functions, engage voluntarily in the state of perpetual celibacy. (Haydock)