When Jesus speaks in Matthew or Mark or Luke or John he is a Jew speaking to other Jews, and I do not think that he is speaking of things gentiles must do in every case. All of the gospels are written in a way that prevents them from being read either as a straight message to a gentile reader or literally by a Jewish reader.
- Gospels use the term 'Fulfillment' in a non literal way yet give no indication of this in its usage unless the reader is familiar already with the allusions.
- Jesus in the four gospels is speaking to other Jews with few exceptions.
- Very strange are claims that miracles can attest to God's support for Jesus -- a ridiculous and unlawful test, impossible to take literally if you follow Torah. It would be a sin to follow someone because they were a wonder worker. The claims are either not literal or are lies, but they are not lies. They only become lies in the mouth. Moses' warning (Deuteronomy 13) against accepting miracles as testimony for a prophet is not part of the ten commandments, no; however it does rest on the commandment to judge fairly and on other bedrock commandments. Fact is, Jews (and probably Christians I think) must not listen to someone on the basis of miraculous powers, ever except to test their words. The miracles themselves are of value only as teaching tools not as proofs.
- We mustn't base principles upon miracles. Principles must be based on ideas and more principles; and miracles are merely a challenge to test what is being spoken.