15 Brethren , I speak in terms of human relations : even though it is only a man's covenant , yet when it has been ratified , no one sets it aside or adds conditions to it. 16 Now the promises were spoken to Abraham and to his seed . He does not say , "And to seeds ," as referring to many , but rather to one , " And to your seed ," that is, Christ . 17 What I am saying is this : the Law , which came four hundred and thirty years later , does not invalidate a covenant previously ratified by God , so as to nullify the promise . 18 For if the inheritance is based on law , it is no longer based on a promise ; but God has granted it to Abraham by means of a promise .
Matthew Henry's Commentary on Galatians 3:15-18
Commentary on Galatians 3:15-18
(Read Galatians 3:15-18)
The covenant God made with Abraham, was not done away by the giving the law to Moses. The covenant was made with Abraham and his Seed. It is still in force; Christ abideth for ever in his person, and his spiritual seed, who are his by faith. By this we learn the difference between the promises of the law and those of the gospel. The promises of the law are made to the person of every man; the promises of the gospel are first made to Christ, then by him to those who are by faith ingrafted into Christ. Rightly to divide the word of truth, a great difference must be put between the promise and the law, as to the inward affections, and the whole practice of life. When the promise is mingled with the law, it is made nothing but the law. Let Christ be always before our eyes, as a sure argument for the defence of faith, against dependence on human righteousness.