"I just know what the Bible says."
I assume you are familiar with these passages, then?
"I say then, Hath God cast away his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin. . .For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles. . .Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee. . .And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob"--Romans 11
"There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus."--Galatians 3:28
That was the old Testament. If we followed that we would be going to church on saturday.