The word occurs five times in the New Testament: of putting out of the stewardship, Luk 16:4; of the removal of Saul from the kingdom, Act 13:22; of Paul turning away much people, Act 19:26; and of removing mountains, 1Co 13:2. A change of kingdoms is indicated.
Hence God's kingdom is in the present, no less than in heaven. See on Luk 6:20.
Of His dear Son (τοῦ υἱοῦ τῆς ἀγάπης αὐτοῦ)
Lit., of the Son of His love. So Rev. The Son who is the object of His love, and to whom, therefore, the kingdom is given. See Psa 2:7, Psa 2:8; Heb 1:3-9. It is true that love is the essence of the Son as of the Father; also, that the Son's mission is the revelation of the Father's love; but, as Meyer correctly says, “the language refers to the exalted Christ who rules.”