Greetings in that Divine and Most Precious Name of Our Lord and Savior Jesus Christ!
Why can't human beings who are female enter the altar? Are they considered unclean? Unworthy of participating in the divine services offered to God?
In the Jewish traditions from the Old Testament Temple rituals, it was actually a bit of the opposite. Women, because they can give birth to new life, are actually considered a bit holier
than men. What men did as priests was atonement, repentance, redemption for sins and shortcomings. This is what I think Paul meant when he said, "Women shall be saved through childbearing" in 1 Timothy 2:15. The Jewish priests weren't punishing women by not allowing them in the Temple during menstruation, or by enforcing gendered segregation in Courts and the Temple services, these were there if anything in benefit to the women. After all, separation is not always a punishment is it? The altar itself is sacred, separate, distinctive, is this a punishment for the altar?
Further, if anything, NOBODY serves the day to day functions of the world more than women, so considering that the altar is service,
isn't it a benefit of women to be removed from this service? After all, women have to do just about EVERY thing else in the world, often unappreciated and out of obligation, so why should they necessarily also want the burden of ministry and responsibility for other peoples' sins? Whether in the Temple or today in the Church, the priests aren't just up their singing pretty songs. Priesthood is a service, a duty, an obligation, and honestly, it seems women already have enough obligations as it is. If men were to give up the priesthood, we'd devolve to the laziest of species