A great number of folks take this passage to mean that the 4th commandment has been abrogated, but as Pilgrim rightly points out, the "sabbath days" involved are explicitly connected to festivals & new moons - religious holidays the observance of which God had commanded in addition to the weekly sabbath in the Mosaic covenant. The extra holidays, being ceremonial, have been abrogated, but the weekly sabbath is a creation mandate & moral law for perpetual observance, hence the 4th commandment.

Kyle

I tell you, this man went down to his house justified.