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Noah (our hero) performs a sacrifice after the flood
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After the flood, Noah performed a sacrifice as a gesture of thanksgiving and dedication to God. In Genesis 8:20, it is described that Noah built an altar and offered burnt offerings of clean animals and birds. This act was not a payment for sin but rather a symbolic expression of contrition, gratitude, and obedience12. God was pleased with the sacrifice and made a covenant with Noah, promising never to destroy the earth by flood again34. This event is often referred to as the Noahic Covenant3.
So it's like.. what the fuck is this.. Yahweh is doing like I don't know.. those gods of the devil worshippers where you gotta sacrifice something for it, right.. like Moloch. lol. But he's doing burnt offerings of clean animals and birds. Hey, that's nice, taking some of those creatures, obviously from the fucking ark and killing them for Yahweh. Never heard of Yahweh being into these sacrifices things like the devil worshippers.
Early Christians did that? Where do you get that from? It was the eucharist all the way till today. Tithe is nothing to do with sacrifice - it's a duty for every Christian to be charitable and help the Church but no one is forced to give back.
Again, it's not constantly changing. If it were the case, what makes your interpretation not subject to said constant change? Suppose your interpretation is correct, how do we know it will still be valid tomorrow? This leads to epistemological nihilism - the inability to have knowledge of the thing in question at all.
This is your gnostic interpretation of the text which you base on your gnostic worldview and its ruling presuppositions. The Christian interpretation shows perfect continuity in both the OT and the NT. What is the "ultimate truth" in your worldview, do we have access to it and if so, how? Where do you get the standard for truth?