Church of God International (United States)
CGI believes Christ came to pay the price for sin, but the law must still be kept. For example, if a judge says you do not have to pay a fine, you still have to keep the law afterward. They believe laws in the Old Testament still must be kept, because the Bible says these laws are from God, not from the Jews. So they do no work on the Sabbath on Saturday, from Friday sunset until Saturday sunset. They also do not eat pork or certain fish which they call "unclean".  They also observe Old Testament holidays. and forbid all sexual sins. They do not obey laws in the Old Testament which were about how God was to be approached then (through animal sacrifices). They believe Christ makes anyone able to approach God. CGI does not follow Jewish traditions which it does not believe is in the Bible. It does not believe physical circumcision is important spiritually. CGI does not believe that God replaced the Jews with the church. CGI believes the law of God is good, and make men good. It believes the law of God can teach and make life happy and full. But they believe salvation is a free gift which cannot be earned. CGI believes this is how the early church worshipped.