The "gospel of heaven" preached by the Lord Jesus is good news to tell the world that the kingdom of heaven is near.
The kingdom of the Father and the will of the Father will be realized and carried out on earth, just as in heaven (cf. Mt. 6:9- 10).
"Kingdom of Heaven" also refers to the future kingdom, that is, the "eternal kingdom" (Matthew. 26:29; Poetry145:13; Version 1 1: 15).