>...before Christ, people did all kinds of crazy things for salvation because there was no way for redemption for their sin and no one worthy to take away there sin. So they sacrificed animals and went to war and such.

Before Christ, it was actually through faith that people received salvation, just as it is taught in the New Testament (and today). This was expressed specifically in Gen 15:6 and Hab 2:4. This is explained in detail in Romans chapter 4. The ceremonial sacrifices introduced by the Mosaic law were a mere shadow of what Jesus' sacrifice fulfilled (as explained in Hebrews). The ancient sacrifices were meant to point to Christ.