“for…for…for…for…for.” This is the figure of speech anaphora, where successive sentences or phrases begin with the same word or words. Anaphora emphasizes each individual item in the list (see E. W. Bullinger, Figures of Speech Used in the Bible). God is making it clear that everyone, yes, everyone, living in Israel obeys His law about the Sabbath.
Being a resident alien did not exempt a person from God’s law. If a person did not want to live under the laws of God, Israel was only a small country, not even 200 miles long and 100 miles wide, and a person was free to leave.