Shall inherit all things. Be an heir of God in all things. See Barnes on "Ro 8:17".

Compare Re 2:7,11,17,26; 3:5,12,21.

And I will be his God. That is, for ever. He would be to them all that is properly implied in the name of God; he would bestow upon them all the blessings which it was appropriate for God to bestow. See Barnes on "2 Co 6:18; Heb 8:10".

And he shall be my son. He shall sustain to me the relation of a son, and shall be treated as such. He would ever onward sustain this relation, and be honoured as a child of God.

{1} "all" "these"