Rom 5:18-19 is from the risen Lord Jesus Christ.
Here is some things from the risen Lord.
So you want only words from the ascended Christ?
Here are some words from the ascended Christ:
Revelation 3:3 Remember, therefore, what you have received and heard; obey it, and
repent. But if you do not wake up, I will come like a thief, and you will not know at what time I will come to you.
Revelation 14:12 This calls for patient endurance on the part of the saints
who obey God’s commandments and remain faithful to Jesus
Revelation 2:5 'Therefore remember from where you have fallen, and
repent and do the deeds you did at first; or else I am coming to you and will remove your lampstand out of its place--
unless you repent.
Revelation 3:19 Those whom I love I rebuke and discipline.
So be earnest and repent.
Revelation 9:20 The rest of mankind who were not killed by these plagues
still did not repent of the work of their hands; they did not stop worshiping demons, and idols of gold, silver, bronze, stone and wood--idols that cannot see or hear or walk.
21 Nor did they repent of their murders, their magic arts, their sexual immorality or their thefts.
Revelation 16:10 The fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness. People gnawed their tongues in agony because of their sufferings and because of their sores, but
nevertheless they still refused to repent of their deeds.
11 and cursed the God of heaven because of their pains and their sores,
but they refused to repent of what they had done.
Oh how I love the Word of God. Repenting of sins is God's plea to us. Try one thing to repent of, something you know you can easily stop doing, then another, then another, call on Jesus for the harder things.