There was a debate among early christians as to whether or not a convert had to convert to judaism. Paul eventually won the debate but jesus did say the old law would not pass until his return...which meant you had obey the law. As a matter of fact, my cousin is renewing her wedding vows in a traditional jewsih ceremony, they also worship as jews, even though they are christians. My cousin's husband, he was my Sunday school teacher when I was a teen, at my brother in laws Baptist church... of course it hasn't gone over well with the Baptists...which is the rest of the family...