How about because He was Lord of the Sabbath.
Mark 2:28
Therefore the Son of man is
Lord also of the
sabbath. How about because He made it, blessed it and sanctified it. John 1:
1In the beginning was the Word, and the Word was with God, and the Word was God.
2The same was in the beginning with God.
3All things were made by him; and without him was not any thing made that was made.
This would have been the perfect time for Him to change it and He did not Far from it. Mat 5:
18For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
19Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
Even the Sabbath. Do you teach men to lie? Why then the breaking of the sabbath?
Ez 22: 26Her priests have violated my law, and have profaned mine holy things: they have put no difference between the holy and profane, neither have they shewed difference between the unclean and the clean,
and have hid their eyes from my sabbaths, and I am profaned among them.