The sabbath was made binding on the nation of Israel during their trek through the wilderness. It was later made part of the Law that was given exclusively to that nation. It has never been imposed on any other nation.
(Psalm 147:19, 20) He declares his word to Jacob, His regulations and judgments to Israel. 20 He has not done so with any other nation; They know nothing about his judgments. Praise Jah!
