Although the teaching that priestly ordination is to be reserved to men alone has been preserved by the constant and universal Tradition of the Church and firmly taught by the Magisterium in its more recent documents, at the present time in some places it is nonetheless considered still open to debate, or the Church’s judgment that women are not to be admitted to ordination is considered to have a merely disciplinary force.
Wherefore, in order that all doubt may be removed regarding a matter of great importance, a matter which pertains to the Church’s divine constitution itself, in virtue of my ministry of confirming the brethren (cf. Lk 22:32) I declare that the Church has no authority whatsoever to confer priestly ordination on women and that this judgment is to be definitively held by all the Church’s faithful. (John Paul II: ORDINATIO SACERDOTALIS)
When the One True God of the Universe was worshipped only by Abram and a small group of people who came from Chaldea the priest who offered sacrifice was the Father of the Family. Never adminstered to liturgically by female hands.
Then that same God manifested himself to Moses, and revealed to him how he was to be worshipped by the Chosen People. Aaron and his sons were to be the only ministers at the Altar. Never adminstered to liturgically by female hands.
Then that same God came down to Earth to save us sinners, and took the name Yeshua ben Yousef (Jesus son of Joseph). He established a Church with many disciples, but only 12 Apostles. He established the Sacraments, and gave them to the Apostles, and to their spiritual descendents (Bishops) in perpetuity. Yet, Christ Himself only ordained 12 Apostles, all of whom were men. This same God was: Never adminstered to liturgically by female hands.