The Traditions of the Fathers, not the Religion of Christ.
Paul says, "I advanced in the Jews' religion beyond many of mine own age among my countrymen, being more exceedingly zealous for the traditions of my fathers." It is easy to see that "the Jews' religion" was not the religion of God and Jesus Christ, but was human tradition. People make a great mistake in considering "Judaism" as the religion of the Old Testament. The Old Testament no more teaches Judaism than the New Testament teaches Roman Catholicism.