“Do not let anyone judge you in eating and in drinking, (either in part of a feast, or new moon, or sabbaths), which are a shadow of things to come”. This text supports Sabbath observance, because it mentions in the parenthetical clause when certain heretics were judging the covenant faithful. They were judging their feasting on feast days, new moons, and sabbath TorahTimes by Daniel Gregg https://www.torahtimes.org/