Some of your brethern would not agree with you. However, I didn't dispensational theology was part of mormonism. Never the less, the dispensations in the Bible are contexturally different from that of mormonism as stated in D&C. As you noted, a specific EVENT signified a modification or change in the covenant in the Bible
So what changed in mormon circles that caused god to change 'everlasting' covenant that lasted for what, 47 years. What was that TChris????
What changed was that the Lord revealed to His prophet that the practice of polygamy was to end. The covenants entered into by those who had practiced it are and were everlasting. The covenant is everlasting, not the practice of polygamy.
We believe today that the covenants entered into between God and man in the Holy Temple are everlasting. There is no polygamy involved, but the covenant and its nature are the same.
Everlasing covenant refers to God’s covenant, with everlasting being God.