How does Job 1:6 show that Satan had access to heaven?
Job 1:6 pictures the sons of God presenting themselves before the Lord, and Satan comes in among them. That scene places Satan right into the very portals of heaven, showing he had access to God's presence. The surrounding passage likewise describes Satan and his angels in heaven until they are cast out.
Les teaches from Job 1:6 that the sons of God came to present themselves before the Lord, and Satan came in among them, right into the very portals of heaven. He notes this is hard for us to comprehend, and many doubt whether Satan and his demons actually have access into heaven. But Job 1:6 clarifies that Satan did have such access. The passage about the dragon and his angels supports this: they fought, Satan and his angels prevailed not, and their place was no longer found in heaven; then the old dragon, Satan, was cast out of heaven into his domain of the earth. Job 1:6 thus shows Satan entering heaven's portals before his eventual expulsion.
Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them.