If Jesus conquered sin, why do His people still sin? Has sin been resurrected? Did sin overcome Jesus' conquering?
If sin is DEAD, DIE(D), GONE, AND FINISHED, did it make a comeback and defeat Jesus' purposes? Are you saying God failed?
Think past our sinning for a minute. It's not about our sinning. We are justified with Christ's blood. The Father accepts Christ's sacrifice. You could be the worst sinner on the planet, but if Christ's blood atone for all that sin, it won't prevent you from going to heaven.
So let's remove ourselves from the equation for a minute and just talk about sin. Sin in general. Not anyone's sin, but just sin as God see's it.
Adam and Eve walked WITH God in the garden. Communed with God daily, talked with Him, there was no separation between God and man. They had God with them. Heaven on earth. Perfection.
Sin enters the picture. Adam and Eve disobeyed God and sin entered the world.
IMMEDIATELY, they loose communion and the ability to commune with God. God cannot have sin. A righteous, just God cannot commune with sin.
IMMEDIATELY, God separates them from the Tree of Life so they will not have access to living forever in their state of sin. Now that would have been hell. To live forever separated from God and in pain, anguish and sin.
So, what two things happend because of sin - No longer being able to commune with God AND that they would die so that they would not have to live for eternity in agony and pain.
So death happened. Two deaths. A spiritual death, removal from communion with God and a physical death that one would die eventually and not have to spend eternity in the pain of sin and sinful natures.
So, when Jesus conquers sin, what is He conquering?
He is conquering spiritual death, which is that we were removed from communing with God, and physical death that we die without being reconciled back to God as we die in sin.
So conquering sin is about reversing what happened with Adam and what humanity lost in the garden.
Romans 6:23
For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
1 Corinthians 15:55
“O death, where is your victory? O death, where is your sting?”
1 Corinthians 15:22
For as in Adam all die, so also in Christ shall all be made alive.
The bigger picture here is that sin is conquered. Not whether one can or does sin after the cross.