John Wesley 
The Righteousness of Faith [EPUB ebook] 

The Apostle does not here oppose the covenant given by Moses, to the covenant given by Christ. If we ever imagined this, it was for want of observing, that the latter as well as the former part of these words were spoken by Moses himself to the people of Israel, and that concerning the covenant which then was. (Deut. 30:11, 12, 14.) But it is the covenant of grace, which God, through Christ, hath established with men in all ages, (as well before and under the Jewish dispensation, as since God was manifest in the flesh, ) which St. Paul here opposes to the covenant of works, made with Adam while in Paradise, hut commonly supposed to be the only covenant which God had made with man, particularly by those Jews of whom the Apostle writes.