God, Through the rebirth never mad anyone imperfect, Born again Christians are a brand new creation in Christ, We are humanly divine and divinly human, We are partalers of God's divine nature.
God no longer sees us as sinners, He sees us through the blood of Jesus, CLEANSED, Righteous, forgiven and saved.
And if we sin, God is faithfull and just to forgive our sins and cleanse us from all unrighteousness.
This is where you go wrong. There is no automatic forgiveness when we sin after re-born as children of God. We have to repent and turn back to Him.
Purgarory does away with God's grace, Forgiving mercy,
Purgatory doesn't do away with God’s mercy. Purgatory demonstrates God's mercy because without it we could not achieve the holiness necessary to enter heaven, at least most of us couldn’t.
1) Of caurse we have to repent, If we confess our sins [To God], He is faithful and just to forgive us and cleanse us from all unrighteousness. 1 Jn 1: 9.
Then we are back in right standing with God.
Sin doesn't make us lose our salvation..
If you sin against your earthly father, It doesn't stop you being his son, It is the same with born again Christians and God, We wont stop being a child of God because we sin, However, It will hinder you relationship with God, As you will feel your not worthy to come into His pressence.
2) Where do you get you beliefs from?? certainly not the Bible,
Where do you find purgatory in the Bible??..Nowhere.
If your not Holy when you leave this earth, You never will be, There is no second chance after death.
The rebirth, The blood of Jesus, The divine nature of God and the sanctifying power of God we have through the rebirth, Makes us Holy, Not works, penance or purgatory.
Matt 25: 1--13 proves that those who aren't holy, wont make it, Jesus said,
"I know you not" Or the meaning is,
"I didn't recognise you as a follower of Me".
V30 [Of the same discorse] says, They will be cast into outer darkness: there shall be weeping and gnashing of teeth.
V41 & 46 says they shall go into everlasting punishment and fire.
And the righteouse go into everlastin live, V46.
PLEASE NOTE, Heaven or hell... No third place,..No place of purgatory.