Romans 5:5

And hope maketh not ashamed--putteth not to shame, as empty hopes do. because the love of God--that is, not "our love to God," as the Romish and some Protestant expositors (following some of the Fathers) represent it; but clearly "God's love to us"--as most expositors agree. is shed abroad--literally, "poured forth," that is, copiously diffused (compare Joh 7:38; Tit 3:6). by the Holy Ghost which is--rather, "was." given unto us--that is, at the great Pentecostal effusion, which is viewed as the formal donation of the Spirit to the Church of God, for all time and for each believer. (The Holy Ghost is here first introduced in this Epistle.) It is as if the apostle had said, "And how can this hope of glory, which as believers we cherish, put us to shame, when we feel God Himself, by His Spirit given to us, drenching our hearts in sweet, all-subduing sensations of His wondrous love to us in Christ Jesus?" This leads the apostle to expatiate on the amazing character of that love.

— Jamieson-Fausset-Brown Commentary (public domain)