In answer to you question, "If we say we just interpret the Bible differently, I'm curious how we do this?":

I was looking at some biographies about people like "Billy Graham", "Rex Hombard" and "D. James Kennedy". These men have been mightily used of God to bring people to the Lord. One was a Baptist, the other a Pentecostal, and another a Presbyterian (Dr. J. Vernon McGee was also a Presbyterian and mightily used of God).

All of these men had one thing in common: They interpreted the Bible differently on many issues. They agreed that the only way of Salvation is by grace through faith in Jesus Christ. These were intelligent men who spent hours studying and praying. They came to different conclusions about the Gifts of the Holy Ghost and eternal security.