The central purpose for Paul's letter to the Galatians resurfaces with each argument he deploys. The church had begun to entertain the idea that salvation was not exclusively secured by grace through faith in Christ alone. Paul writes emphatically, persuasively, and authoritatively to dispel this idea. The apostle is aware that if such a notion is tolerated to any degree within the confessing church, this heresy would soon spread like cancer and threaten to corrupt the greater Body of Christ and the whole of christian doctrine. This emphatic mission of Paul to set the church straight, while there was still influence and opportunity to do so, gives rise to central proclamations of Gospel truth throughout the book. Our text today is preceded by one of these in verses 13&14. The verses which follow serve to proclaim and explain the legal documentation and its precise terms throughout scripture which set the parameters for the gospel. In this way Paul provides an expert witness for covenant theology. He details the specifics of God's covenant relationship with His people through the course of redemptive history. As Paul writes to the Galatians, he provides detailed analysis of the covenant specifics grounding the Gospel from the first sermons preached in Acts by apostles who preceded him. Note Peter's sermon and closing appeal (Acts 3:18-20, 25-26)...