Do you follow the method of the Pharisees or Sadducees for the counting of the omer to determine Shavuot? It seems that most in the independent Messianic movement follow the counting method of the Sadducees.
Exodus 1:8 says that a Pharaoh came to power in Egypt who did not know Joseph. How is this possible when the final part of Genesis says that Joseph was made second only to Pharaoh? How did the Israelites find themselves enslaved by Egypt?