Purification happens when one acknowledges one's sins, asking for God's forgiveness and from those whom one has transgressed while living pa siya here on Earth. By God's mercy and grace we are continually purified. And ang pagtoo nalang daan ni Jesus Christ already means that one is saved. Once you surrender your life to Him, kanang tinud-anay gyud nga submission sa imung kinabuhi, Iyaha naka. Oo makabuhat gehapon kag mga sayop but the Holy Spirit which already lives in you will convict you of the wrongs you've done. That strong conviction will lead you to confession and repentance. Once forgiven, those sins are erased. And yes, I am very sure of being in heaven soon.
bisan pa mo ingon ka we are continually purified here on earth dili gihapon ka kapasar diritso sa "nothing unclean shall enter heaven".