9-4-5 The Sabbath And Conscience

How can Romans 14 say that keeping days as special is a matter of conscience, if it is a vital part of our obedience to God?

You are ripping this chapter out of its context like you usually do with passages like this. The context of Romans 14 refers only to the feast days and ceremonial days of the Jewish ceremonial law. Also mentioned in this verse are the ceremonial food laws. Clearly Paul is dealing only with those things specific to the Jews. In Isaiah 56:1-2 God binds the Sabbath on Jew and Gentile : “Keep justice, and do righteousness, for my salvation is about to come, and my righteousness to be revealed. Blessed is the man who does this, and the son of man who lays hold on it; who keeps from defiling the Sabbath, and keeps his hand from doing any evil” Christ chose to appear repeatedly to His disciples on the first day of the week (Mt. 28:9; Lk. 24:15-31, 36; Jn. 20:19, 26). This pattern of appearance is carefully noted in the Scriptures and is obviously not arbitrary. Jesus chose the first day of the week to strengthen the apostles’ faith, instruct them in doctrine, issue commands, engage in fellowship, and partake in the breaking of bread.