Jesus is Lord. Does that mean He never was? Or that He is only Lord now and in the future?
For this comparison to have validity, you would need to demonstrate how the seventh day continued to exist - not only 2.1+ million days later, but before creation itself to match the eternal nature of the Living God. Bottom line: your comparison is invalid.
Verbal tenses have great meaning in Scripture, as Jesus demonstrated according to John 8.
48 Then the Jews answered and said to Him, Do we not say rightly that You are a Samaritan and have a demon?
49 Jesus answered, I do not have a demon; but I honor My Father, and you dishonor Me. 50 And I do not seek My own glory; there is One who seeks and judges. 51 Most assuredly, I say to you, if anyone keeps My word he shall never see death.
52 Then the Jews said to Him, Now we know that You have a demon! Abraham is dead, and the prophets; and You say, If anyone keeps My word he shall never taste death. 53 Are You greater than our father Abraham, who is dead? And the prophets are dead. Who do You make Yourself out to be?
54 Jesus answered, If I honor Myself, My honor is nothing. It is My Father who honors Me, of whom you say that He is your God. 55 Yet you have not known Him, but I know Him. And if I say, I do not know Him, I shall be a liar like you; but I do know Him and keep His word. 56 Your father Abraham rejoiced to see My day, and he saw it and was glad.
57 Then the Jews said to Him, You are not yet fifty years old, and have You seen Abraham?
58 Jesus said to them, Most assuredly, I say to you, before Abraham was, I AM.
59 Then they took up stones to throw at Him; but Jesus hid Himself and went out of the temple, going through the midst of them, and so passed by.
Jesus revealed His pre-incarnate divinity with His revealed name,
which is a verb in the present tense, contrasted with Abraham described in the past-tense.
Forcing your theology into the Bible violates the verbs Scripture uses. They have meaning, that you still can't reconcile your opinions with.
Red herring. Adam didn't have the Sabbath.
Or is it that the term man is only in reference to Jews? Gen. 1: 27 So God created man in his own image, in the image of God created he him; male and female created he them.
Red herring. Adam didn't have the Sabbath.
And even your appeal to the Mosaic covenant proves that he didn't.