<p>2:21 <i>I do not make void the grace of God. For if righteousness is through the law, then Christ died for nothing</i>- Strong language, but this is what all trust in legalistic obedience to law amounts to. We can frustrate the intention of God's grace, we can void or frustrate s.w. the will of God against ourselves by refusing baptism (Lk. 7:30). So much can be wasted, like the wine / blood of Christ pouring out on the earth unless we become new wineskins. &quot;Make void&quot; means literally to abrogate; perhaps the idea is that Paul had abrogated the Law, and not God's grace. And all this terrible waste of God's grace can come about, in the context of this chapter, by being pressured by legalistic brethren into rejecting salvation by grace alone.</p>