What about Adam who was commanded to cleave unto Eve?
What about Joseph, who fled Potipher’s wife in order not to “sin against God”?
God is the same.
Don't try to put words in my mouth 7. Mosaic covenant and laws fixed a culture that was different from Abraham's era. In the context of hagar, it was within the cultural norms, which were outside of the bible. However, where God didn't specify a particular behavior as sinful, there was tolerance. That went away with God's greater revelation (same God providing more guidance to a nation, not individual).
And if God is the same, he NEVER progressed to God.