In Romans 4:16, Paul concludes that faith guarantees the promise to all offspring — directly explaining why faith is necessary if the law nullifies the promise.

Romans 3:31 affirms that faith does not overthrow the law but upholds it, a complementary argument to Paul's point that law-based heirs void faith.

In Romans 9:31, Israel's failure to attain righteousness by pursuing law illustrates the same futility of relying on law for the promise.

In Galatians 2:21, Paul argues that if righteousness came through law, Christ died for nothing — reinforcing that law-based righteousness nullifies grace.

In Galatians 3:18-24, Paul develops the same argument: the law was added later and serves as a tutor until Christ, not as the means to inherit the promise.

In Galatians 5:4, those seeking justification by law are severed from Christ — directly supporting Paul's claim that law-based heirship nullifies faith and promise.

In Philippians 3:9, Paul similarly contrasts law-based righteousness with faith-based righteousness, echoing the same tension between law and promise.

Hebrews 7:19 states the law made nothing perfect, reinforcing Paul's point that relying on the law nullifies faith and the promise.

Hebrews 7:28 contrasts the law's weakness with the perfection of Christ's appointment, supporting the theme that law cannot bring the promised inheritance.

In Galatians 3:12, Paul states the law is not of faith — reinforcing that those under law cannot be heirs by faith.

In Galatians 3:17, the law does not invalidate the promise — directly supporting the argument that law-based heirs would nullify it.

In Galatians 3:29, believers are heirs through promise in Christ — the positive counterpart to Romans 4:14's negative warning about law.