The Bible does not teach perfect holiness in the body or in a intermediate state. We don’t have to be perfect to go to heaven because Satan and his angels appear before God in heaven and they have no purity in works or nature to be allowed before God. If the trials of fire didn’t perfect you while you lived in your body what makes you think fire can burn away impurities afterward?
“We don’t have to be perfect to go to heaven...”
Revelation 21:27. We will be perfect in Heaven. After all “we shall be like him, for we shall see him as he is” (1 John 3:2).
“...because Satan and his angels appear before God in heaven and they have no purity in works or nature to be allowed before God.”
An allegorical opening to Job is not proof that Satan can enter Heaven. After all why would God bother throwing Satan out of Heaven if He was just going to let him back in over Job?
“If the trials of fire didn’t perfect you while you lived in your body what makes you think fire can burn away impurities afterward?”
1) Don’t assume the fires are to be taken as literal flames on that side of the divide.
2) If God can use cloths that Peter touched to heal people (Acts 19:12), I don’t see why He couldn’t use a fire He created to cleanse souls with grace. It all belongs to Him. He can do whatever He wants. How is it any different than baptism? Grace cleanses the soul, but water is outwardly used. To me it just sounds like Zechariah 13:9.
Seriously, have you never read Isaiah chapter 6:
6 Then one of the seraphim flew to me with a live coal in his hand, which he had taken with tongs from the altar. 7 With it he touched my mouth and said, “See, this has touched your lips; your guilt is taken away and your sin atoned for.”
A burning coal was used by an angel sent by God to take away the guilt of sin from Isaiah. Go ahead and explain away that one.