My read of Exodus only mentions male priests. If you believe that today we as Christians are priests then what happens to the women? Can a woman be a priest of the lord and when did that change in scripture?
God doesn't really follow a timeline of changes.
But gender bias is not possible under God's law.
Matthew 7:12
“So whatever you wish that others would do to you, do also to them, for this is the Law and the Prophets.
Luke 6:31
And as you wish that others would do to you, do so to them.
1 Peter 2:9
But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light.
1 Peter 2:5
You yourselves like living stones are being built up as a spiritual house, to be a holy priesthood, to offer spiritual sacrifices acceptable to God through Jesus Christ.
Revelation 1:6
And made us a kingdom, priests to his God and Father, to him be glory and dominion forever and ever. Amen.
1 Peter 2:9-10
But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light. Once you were not a people, but now you are God's people; once you had not received mercy, but now you have received mercy.