This represents a problem with Christianity not Judaism.
God does all things decently and in order. God is not the author of confusion. 1 Corinthians 14:40
Let all things be done decently and in order.
1 Corinthians 14:33
For God is not the author of confusion, but of peace, as in all churches of the saints.
Some people associate Christianity with the division of Christianity and Judaism, which can be and are practiced separately, and I wouldn't word it together in the context of Messianic Judaism, but following Jesus and following the Old Testament are not mutually exclusive. It's just a semantics detail. It doesn't represent a problem with Christianity. Jewish Christian - Wikipedia
The split of Christianity and Judaism took place during the first centuries CE.[2][3]While the First Jewish–Roman War and the destruction of the Second Temple in 70 CE were main events, the separation was a long-term process, in which the boundaries were not clear-cut.[2][3]