Sin is rebellion against God. It is disobedience to His revealed will as it is written in the Bible, God's revelation to man, without which we could not know Him or His love for us, or His plan, through Jesus Christ, to be reconciled with us.
It is true that "we are all sinners."
It is also true that we are saved only if we have received Christ
as an act of our own free will.
Those who are in Christ Jesus are those who have professed their faith (belief) in
Jesus' propitiatory sacrifice as payment in full of the sin debt of death they owe to God, and have repented [not a gooey emotion], - for repentance literally means to turn [away from sin], and go another way.
Having accepted this precious gift of eternal life; they have instantly been cleansed of sin by the indwelling Holy Spirit with whom they are baptized into the universal body of Christ, which is composed of all believers in Jesus Christ upon the earth, and they are eternally sealed, for Jesus said the Comforter He would send would never leave you.
The Holy Spirit is God's seal on His people, His claim on us as His very own. The Greek word translated "earnest" in these passages is arrhabōn which means "a pledge," that is, part of the purchase money or property given in advance as security for the rest.
God looks at them, and instead of seeing their sin, He sees His sons' precious passover blood applied spiritually to the lintel and doorposts of their heart. He sees them as righteous and justified.
Subsequently remaining free of sin requires asking God for forgiveness - "If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness."
(1st John 1:9)
Having unconfessed sin in your life doesn't remove your salvation. You will not become unsaved, i.e., unglued from the seal of the Holy Spirit, but it will hinder, if not block your ability to communicate with God through your prayers.
Because of your own conscience, it will blemish the joy of your salvation.
There are verifying scriptures for this, Bible Hub is online. https://biblehub.com
There is only ONE who is worthy and able to take away the sins of the world, Jesus Christ.
John 1:29: "The next day John saw Jesus coming toward him and said, “Look, the Lamb of God, who takes away the sin of the world!"
1 Corinthians 15:3
"For what I received I passed on to you as of first importance: that Christ died for our sins according to the Scriptures,"
1 Peter 1:19
but with the precious blood of Christ, a lamb without blemish or spot.
1 John 3:5
But you know that Christ appeared to take away sins, and in Him there is no sin.
One of the two thieves crucified with Jesus believed Jesus was the Son of God. He received just punishment for his crime from the earthly government. He was put to death.
He confessed he deserved the cross; he was saved because of his profession of faith in Jesus.
Faith is all that is required. One cannot "earn" or "work" his way into heaven.
It is a free gift of God... based only on our belief, repentance and acceptance.
Any good deeds that we do as Christians is a result of our salvation, and of being enabled by the indwelling Holy Spirit, it does not save us.
"One of the criminals who hung there heaped abuse on Him. "Are You not the Christ?" he said. "Save Yourself and us!
But the other one rebuked him, saying, 'Do you not even fear God, since you are under the same judgment?
We are punished justly, for we are receiving what our actions deserve. But this man has done nothing wrong.'
Then he said, "Jesus, remember me when You come into Your kingdom!
And Jesus said to him, "Truly I tell you, today you will be with Me in Paradise."
While not as well versed in quoting scripture to s... (