focus on the letter
All your comments are good, but having said that, there is a big message in this text. There are those who make religious laws for others to follow, all fot he purpose of making themselves look good, or look like the elite leaders that you must follow. Those who want to insist on laws for their and your salvation, do not know what faith is. Salavation comes only in and through Christ's death and not through the keeping of laws.
