The Father God is Holy, & sin separates us from God. Even one sin will keep us out of heaven. That is why only those redeemed by the blood of the Lamb of God, go to heaven and take part of the first resurrection.
Jesus suffered our sins & because He was sinless, rose from the dead. The wages of sin is death. So Jesus Christ is our Lord, our High Priest, our King. Our High Priest because He gave himself to atone for our sins. So when His Blood cleanses us from our sins, He made the Way for us to go to the Father. Father God doesn't see our sins. We are restored in our relationship with God.
When we do sin again, we have an advocate, Jesus Christ the righteous. If we confess our sin, He is righteous & just to forgive us our sin & cleanse us from all unrighteousness.
We just need to plead the blood of Jesus, & pray to God the Father. Knowing that what Jesus did is sufficient & has given us eternal life.