there are currently no offenders in the kingdom.
Since that kingdom is the entire creation, excluding the LOF, how is that possible that no offenders exist in creation?
Not to mention even you say the kingdom was given to the church, which is not really what Jesus even said.
The kingdom of heaven or God is still of heaven and not the earth. That it was given to the church was declaring the body of believers was given the responsibility to gather the lost into the kingdom of heaven, instead of ethnic Israel under the Law / OT Covenant.
The church is not the kingdom of heaven. The church is God's representative on earth and we are ambassadors of the heavenly kingdom.
Since this is not a physical kingdom but a spiritual one, a church building is not like a national sovereign land claim owned by God.
The earth will only be claimed as Jesus' kingdom at the 7th Trumpet. There is still that difference between the heavenly kingdom of God, and Jesus as King over the earth during the Millennium. The church is still waiting in heaven and not on the earth during the Millennium. That is still a separation of the heavenly Kingdom and the earthly kingdom.
I agree that there are no offenders in heaven, but congregations on earth are a totally different story. There are redeemed people still in Adam's dead corruptible flesh, who crucify the flesh daily. There are still pretenders or people so deceived they cannot even understand the difference.
Satan does not personally come and talk to every single person on earth, because it is not necessary. When Jesus comes at the Second Coming, all spiritual blindness will be removed and for a minute no deception will be in play. That is when Satan will campaign in person and will have to deceive the entire world. The first act will be to revive a one world government that will provide for the needs of humanity, as all the works on earth were just burned up at the Second Coming.
When people attempt to put a spiritual intepretation on Matthew 13, they apply this explanation of Jesus as very limited and even to a small part of the first century. Partial preterist extend the point to the church over the last 1900 years, thus we have amil. But Jesus is not talking about the church at all. Jesus is talking about His Kingdom that will be declared at the 7th Trumpet.
This is the baptism of fire declared by John the Baptist:
"Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire."
The baptism of fire is declared in 2 Peter 3:10
"But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up."
Notice the fact that all works are burned up. The wheat is what survives to live on earth during the Day of the Lord. The church is not the wheat. The wheat are those directly chosen by Jesus after Jesus is on the earth. The church was already removed and told to wait until the final harvest was completed. This is not a church harvest. This is a harvest produced directly by Jesus:
"He that soweth the good seed is the Son of man."
The Son of man is Jesus.
Obviously this can be interpreted out of context as the church over the last 1994 years or the Preterists view that limits this to the first century. The church was called the body of Christ. The church is also called the bride. But how can the church be the Son of man?