Ebionism was an ancient heresy that was present in the early church and almost destroyed it. It was one of the chief heresies that Paul fought against in Galatians. What is it? It is an attempt to make all the saints of God to go back under the law. It is, in essence, judaizing the Gentile saints. Ebionism demands that all the saints go and live under the Levitical Laws, not just the Sabbath. It is formalism to its highest form. It kills the spirit of the saints while demanding that they live by something that Christ Himself did away with at the cross. It was not the moral law, but the Levitical Laws which were abolished. We see the reappearance of this heresy by the push that all celebrate the Jewish Holidays and especially the Passover.