Last time I checked we are to compare scripture with scripture …
Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.
You’re way off base.
When you read Scripture literally, grammatically, & historically, not allegorically, the apostles do not redefine Israel, cancel covenants, or reinterpret the prophets in a way that contradicts their original meaning. They expand the blessings to Gentiles, but they never erase God's eternal promises to ethnic Israel. They didn't start a brand new religion. Jesus came to save the lost sheep of Israel and will complete this work once the fullness of the Gentiles comes in.