Rom 5:17 For if by the one man’s offence death reigned through the one, much more those who receive abundance of grace and of the gift of righteousness will reign in life through the One, Jesus Christ.
The Jamieson, Fausset, and Brown Commentary says, ‘the whole statement amounts to this: ‘If one man’s one offence let loose against us the tyrant power of Death, to hold us as its victims in helpless bondage, ‘much more,’ when we stand forth enriched with God’s abounding grace,’ and in the beauty of a complete absolution from countless offences, shall we expatiate in a life divinely owned and legally secured, ‘reigning’ in exultant freedom and unchallenged might.
Adam was the head of the old creation and Christ is the Head of the new creation. 1 Corinthians 15 says that Jesus is the Last Adam. The OT is the ‘book of the generations of Adam’ (Genesis. 5:1) It ends speaking of a curse (Malachi. 4:6) The NT is the ‘book of the generation of Jesus Christ’ (Matthew. 1:1) It ends with ‘no more curse’.
Jesus reigned, reigns and will reign forever in this life and every other life. He has conquered death itself. Nothing else remains to be defeated and subjugated to Christ. He rules! I’m on His side. I’m inextricably linked to Him, united with Him, sharing His victory and power. My purpose in life is to now subjugate those areas not yet under His dominion. We are implementing and appropriating the victory Christ has won. Where sickness still exists in this world it is only because we have not implemented the healing of Christ through the cross. Where devils still oppress people it is because we have not yet taken dominion over them. Poverty rules in people’s lives because we have not brought the prosperity of Christ.