Romans 15:6 - Matthew Poole's English Annotations on the Holy Bible

That ye may with one mind and one mouth glorify God: q.d. I further pray, that you may not only be like-minded one towards another, but that ye may with one mouth glorify God; that whether you be Gentiles or Jews, strong or weak in the faith, you may agree and be unanimous in his worship and service; that not only with one mind, but with one mouth, or as if you had all but one mouth. you may pray unto God and praise him: that is one way of glorifying God, Psalms 50:23, and it seems to be chiefly intended in this place. See Acts 4:32, what accord and unanimity there was among the primitive Christians. Even the Father of our Lord Jesus Christ; a usual periphrasis of God in the New Testament: see 2 Corinthians 1:3, 2 Corinthians 11:31 Ephesians 1:3 Colossians 1:3 1 Peter 1:3. God is the Father of Christ, first, as he is the Son of God; so he begat him by an eternal and ineffable generation, 1 Thessalonians 3:16 1 John 4:9. Secondly, as he is man: so he created him, Luke 1:35. Thirdly, as he is Mediator; so he appointed him to and qualified him for that office, Psalms 40:8 1 Thessalonians 20:17. This compellation of God includes all our comfort and happiness, for he is our Father because he is the Father of Jesus Christ. It is added here by way of limitation, to distinguish the true God from the false gods of the earth; and by way of explanation, to show how God will be glorified and worshipped under the gospel, viz. as the God and Father of onr Lord Jesus Christ.