Romans 15:13

Here is another prayer directed to God, as the God of hope; and it is, as the former (Rom 15:5, Rom 15:6), for spiritual blessings: these are the blest blessings, and to be first and chiefly prayed for. I. Observe how he addresses himself to God, as the God of hope. It is good in prayer to fasten upon those names, titles, and attributes of God, which are most suitable to the errand we come upon, and will best serve to encourage our faith concerning it. Every word in the prayer should be a plea. Thus should the cause be skilfully ordered, and the mouth filled with arguments. God is the God of hope. He is the foundation on which our hope is built, and he is the builder that doth himself raise it: he is both the object of our hope, and the author of it. That hope is but fancy, and will deceive us, which is not fastened upon God (as the goodness hoped for, and the truth hoped in), and which is not of his working in us. We have both together, Psa 119:49. Thy word - there is God the object; on which thou hast caused me to hope - there is God the author of our hope, Pe1 1:3. II. What he asks of God, not for himself, but for them. 1. That they might be filled with all joy and peace in believing.

— Matthew Henry's Concise Commentary (public domain)

Now, &c.--This seems a concluding prayer, suggested by the whole preceding subject matter of the epistle. the God of hope--(See on Rom 15:5). fill you with all joy and peace in believing--the native truth of that faith which is the great theme of this epistle (compare Gal 5:22). that ye may abound in hope--"of the glory of God." (See on Rom 5:1). through the power of the Holy Ghost--to whom, in the economy of redemption, it belongs to inspire believers with all gracious affections. On the foregoing portion, Note, (1) No Christian is at liberty to regard himself as an isolated disciple of the Lord Jesus, having to decide questions of duty and liberty solely with reference to himself. As Christians are one body in Christ, so the great law of love binds them to act in all things with tenderness and consideration for their brethren in "the common salvation" (Rom 15:1-2). (2) Of this unselfishness CHRIST is the perfect model of all Christians (Rom 15:3). (3) Holy Scripture is the divine storehouse of all furniture for the Christian life, even in its most trying and delicate features (Rom 15:4). (4) The harmonious glorification of the God and Father of our Lord Jesus Christ by the whole body of the redeemed, as it is the most exalted fruit of the scheme of redemption, so it is the last end of God in it (Rom 15:5-7).

— Jamieson-Fausset-Brown Commentary (public domain)