Hello, purgatory is hell... 
 first of all,after a man dies there is only judgement (Hebrews 9:27) 
 then read Revalation 20:11-15,they're judged according to their work,but whosoever was not found written in the book of life is cast into the lake of fire. 
 Nobody of those who are in the Great White Throne judgement will be found in the book of life. 
 All born-again Christians are in heaven,they were in the first resurrection (rapture) (Revalation 20:6) 
 They were cleansed by the blood of the lamb(Jesus Christ) read John 3:16 and Isaiah Chapter 53. 
 There's no purification after death. 
 We have to repent (turn away from sin) see Acts 17:30 
 only in this world