If the shedding of the blood of Christ was required to pay for past sin.
The shedding of his blood would also be required for future sin.
So unless Jesus is going to come and be crucified again for your present and future sin, You better pray he paid for all sin. Else we will be served with walking papers to hell when we leave this lifetime.
The atoning sacrifice only applies when we believe and have faith.
The future is unknown, and when it has become the past, by faith it can atone for that sin.
The problem with language, we are cleansed so we can walk with Jesus and not continue in sin and wickedness.
If one comes to faith, is cleansed, purified and forgiven and refuses to stop sinning or even repent of it, ones past position is ignored, rubbed out as if it never happened.
It is all about our relationship with Him, not bean counting. If one can live with sin and commune with Christ, then this is not real. Jesus's atonement is not the issue, it is our walk and our faith. The promises apply to those who stay in Christ, who abide, who know that above all else love reigns. Hell is a place of destruction of those who eternity will not work for, not because they have sinned. Punishment will be given for sin, but it is their lack of a heart in Christ that destroys the soul when we see Christ.
It is why to look at Gods face is death unless we are His. Total resolution of who we are is dependent on being whole and made complete in Him.
Some talk as if it is just a patch up job, and a bit of sticky plaster is good enough. Once you begin to see how fragile we are and how much we need love and Gods holiness and purity in us, then the truth slowly dawns. It is survival with God, an impossible place for a sinner, so pure, so blindingly holy and complete, a sinner is just chaff in the wind, just about held together. Think of the biggest shocks we have, that cause ptsd. Meeting God without Jesus making us whole is 100x worse.
Standing in Jesus is trust for today, and He will lead us through. Worry about failure tomorrow and its trials is unbelief. A child knows they are secure in the parents arms, so likewise we know we are secure in Jesus's arms because of the cross. God bless you