There’s no arguing unless some new evidence has been found. Philistines were invaders from the Mediterranean and were not Semites like Jews and Arabs.
Egyptians and Jews were very familiar with cultures in places like Africa and South Asia, and certainly the cultures around the Mediterranean.
Churches that teach a False Gospel could be what you mean..
You can find those scriptures in Galatains and Colossians...
1.GALATIANS 4:15-What has happened to all your joy? I can testify that, if you could have done so, you would have torn out your eyes and given them to me.
2.Galatians 2:16: “Know that a man is not justified by observing the law, but by faith in Jesus Christ. So we, too, have put our faith in Christ Jesus that we may be justified by faith in Christ and not by observing the law, because by observing the law no one will be justified.”
Salvation is the *Cross* it is not about rituals, organized religion, the *Law*, it is about Christ and Christ alone...
ACTS 4:12
Salvation is found in no one else, for there is no other name under heaven given to mankind by which we must be saved