“Is your argument that the One True G-d, the LORD contradicts Himself?”
I think the God who established the sabbath, has the authority to abrogate it too, just like Kimchi:
R. David Kimchi in Josh. vi. 11:
““the day on which Jericho was taken was the sabbath day; and that though they slew and burnt on the sabbath day, “he that commanded the observation of the sabbath, commanded the profanation of it”.’’
And I think the God who established the Old Covenant, which you don’t follow anyway, can establish a new one:
Jer 31:31 “Behold, the days are coming, declares the LORD, when I will make a new covenant with the house of Israel and the house of Judah,
Jer 31:32 not like the covenant that I made with their fathers on the day when I took them by the hand to bring them out of the land of Egypt, my covenant that they broke, though I was their husband, declares the LORD.