He proclaimed the kingdom of God and taught about the Lord Jesus Chris

Acts 28:26-31
Go to this people and say, "You will be ever hearing but never understanding; you will be ever seeing but never perceiving."
For this people's heart has become calloused, they hardly hear with their ears, and they have closed their eyes. Otherwise, they might see with their eyes, hear with their ears, understand with their hearts and turn, and I would heal them."
Therefore I want you to know that God's salvation has been sent to the Gentiles, and they will listen!
For two whole years, Paul stayed there in his own rented house and welcomed all who came to see him. He proclaimed the kingdom of God and taught about the Lord Jesus Christ—with all boldness and without hindrance(阻力)!
What happened after this is not known. Most probably he was released, went to Spain as planned, and then back East before further imprisonment and execution in about AD64-65.
Why?
It is the real situation when we preach the gospel to people. Some people will accept Jesus Christ, but some of their hearts are closed.
Paul did what God has commanded him to preach the gospel to the Gentiles and Paul explained the truth with all boldness and without hindrance.
How?
Praise to the Lord, his love endures forever, let Paul preaches the gospel to the Gentiles, so I can be Christian.