Adam Clarke's Commentary on the Bible - Romans 15:13
Now the God of hope, etc. - Ὁ δε Θεος της ελπιδος , May the God of this hope - that God who caused both Jews and Gentiles to hope that the gracious promises which he made to them should be fulfilled; and who, accordingly, has fulfilled them in the most punctual and circumstantial manner; Fill you with all joy - Give you true spiritual happiness; peace in your own hearts, and unity among yourselves; in believing not only the promises which he has given you, but believing in Christ... read more
Adam Clarke's Commentary on the Bible - Romans 15:9
And that the Gentiles might glorify God for his mercy - As the Jews were to glorify God for his truth, so the Gentiles were to glorify God for his mercy. The Jews received the blessings of the Gospel by right of promise, which promise God had most punctually and circumstantially fulfilled. The Gentiles had received the same Gospel as an effect of God's mere mercy, having no right in consequence of any promise or engagement made with any of their ancestors, though they were originally... read more