zubenelgenubi
I'm a star
The question posed was not if he would or wouldn’t allow sin into Heaven.
To summarize the original confusion in the young person.
2 apparently contradictory teachings from his youth pastor.
1. Nothing is impossible for God.
2. It is impossible for God to let sin into heaven.
What say you @upschuck ?
Do you think God can let sin into heaven if he wants?’
Without trying to bible thump, depending on what understanding you subscribe to about the origin of Satan, you can argue that God did allow sin in heaven, resulting in Lucifer's expulsion from heaven to become Satan. Isaiah mentions Lucifer, who many believe to be the fallen angel who became Satan, in chapter 14. There are apocryphal stories that go into more detail. So that's one way to answer. My guess is you really wouldn't want to be the next person who tries what Lucifer did.