Romans 15:13 (ESV) … “May the God of hope fill you with all joy and peace in believing, so that by the power of the Holy Spirit you may abound in hope.”
This chapter is remarkable for its threefold designation of God. The God of patience and comfort, v. 5; the God of hope, v. 13; and the God of peace, v. 33. Our character may be deficient in these things, but his fullness is there for us to draw upon. There is no stint or lack for those to whom he says, “Son, thou art ever with me, and all that I have is thine.”
We must always be on the lookout for the weak, the heavy-laden, and the downcast. Let us help them with their burdens, anxieties, fears, and questionings—imparting to them something of our cheery hope. Never pleasing ourselves; merciful to others; though merciless in the standard and criticism we apply to our own conduct; comforting ourselves with the Word of God, that we may be able to impart these divine consolations to others.
Where such conditions are realized, life becomes a dream of heaven actualized in flesh and blood. But we must fulfill the injunctions of vs. 9–13, rejoicing in praise and abounding in hope. The outlook on the earth-side may be dark and depressing, but un-curtain your windows toward God—see, the land is light.
 Meyer, F. B. (1914–1918). Through the Bible Day by Day: A Devotional Commentary (Vol. 6, pp. 97–98). Philadelphia: American Sunday-School Union.