Sacred cows are for humans, not for God/Jesus Christ. Jesus taught that LOVING others is paramount and considered Sabbath observance as irrelevant, and naturally He would because Jesus Christ IS the REST those who understand enter into. When Jesus and His disciples walked through farm fields, plucked and ate corn-on-the-cob, the religious self-righteous accused them of "breaking" the Sabbath. Of course Jesus could care less what they thought, because He was commander and chief of the Sabbath. Far more important to Jesus, was not plucking corn on the Sabbath, but humility, love and compassion, which was foreign to the pastors of the common folk.
Religious sacred cows, such as "tithing" and "obeying those who have the rule over you", Sabbath observance, "Holy" day observance and such are all totally inconsequential to "love your neighbor as you love yourself", "do unto others as you would have them do unto you", "blessed are the peacemakers", "blessed are the meek", "blessed are the merciful" and so forth.
Will the self-righteous church goers ever see the light of day? MOO MOO!