It says that God showed the full extent of his hatred of sin by putting it all on Jesus, on a cross. Then, it says that God showed his acceptance of Jesus' sacrifice by raising him from the dead. I can only offer suggestions as to an answer. I'll begin by telling you a true story. Two pastors, both of which were the founders of major denominations, were known to disagree with each other sharply on certain Biblical issues.
People are, by nature, creatures that gravitate toward others like themselves.
Also, godly Christians in the past have stood firm on what they believe, and they just so happen to be influential. I'd suggest looking at the existence of different denominations as a strength. Just as there are different colleges that teach the same subject, in different ways, so there are different denominations that present God, Jesus, the Spirit, and the Bible in different ways. The Bible was originally written in two languages, Hebrew and Greek. The Old Testament was written in Hebrew, and the New Testament was written in Greek.