“But now the people believed Philip’s message of Good News concerning the Kingdom of God and the name of Jesus Christ. As a result, many men and women were baptized.” – Acts 8:12
Notice a close connection between Matthew 24:14 and the Great Commission. When the Lord ascended, He commissioned His disciples —
“Therefore, go and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit. Teach these new disciples to obey all the commands I have given you. And be sure of this: I am with you always, even to the end of the age.” – Matthew 28:19 – 20
Both verses speak about the same mission – worldwide evangelization until the end of the Age.
The book of Acts shows that the apostles set out to fulfill this mission. Philip went down to Samaria and preached the gospel. We have in Acts 8:12 the same phrases as that in Matthew 24:14, except that we have a verb instead of a noun with the description “concerning” inserted into the phrase.
When Paul came to Rome a large number of people gathered. What was his message?
“So a time was set, and on that day a large number of people came to Paul’s lodging. He explained and testified about the Kingdom of God and tried to persuade them about Jesus from the Scriptures. Using the law of Moses and the books of the prophets, he spoke to them from morning until evening.” – Acts 28:23
The testimony about the Kingdom of God, the gospel of the Kingdom, was the message Paul proclaimed.
However, Paul met the same reaction as had our Lord when He appeared in Israel announcing the Kingdom of God. Some believed, but the majority rejected his message. Paul then announced God’s purpose for the Gentiles since Israel refused to believe —
“So I want you to know that this salvation from God has also been offered to the Gentiles, and they will accept it.” – Acts 28:28
The fact that the gospel of the Kingdom of God is the same as the message of salvation is further proven by the following verses —
“For the next two years, Paul lived in Rome at his own expense. He welcomed all who visited him, boldly proclaiming the Kingdom of God and teaching about the Lord Jesus Christ. And no one tried to stop him.” – Acts 28:30 – 31