Christ's auhtority is the cause and grounds for missions 28:18 We have a part to do in making disciples. Take note that 'make disciples' is in the active voice 28:19a We do this by: Baptism - publicly being identified as Christ's disciples. Teaching them Christ's commandments, for their growth into Christ likeness. 4. And as a result we remember and behold that Christ is with us.
Main point summary
Since Jesus has authority over all, therefore making disciple of all nations can be accomplished and in so doing, behold the Christ is with you!
And Jesus came and said to them, h “All authority i in heaven and on earth has been given to me.
καὶ προσελθὼν ὁ Ἰησοῦς ἐλάλησεν αὐτοῖς λέγων· ἐδόθη μοι πᾶσα ἐξουσία ἐν οὐρανῷ καὶ ἐπὶ [τῆς] γῆς.
j Go therefore and k make disciples of l all nations,
πορευθέντες οὖν μαθητεύσατε πάντα τὰ ἔθνη,
j baptizing them m in 1 n the name of the Father and of the Son and of the Holy Spirit,
βαπτίζοντες αὐτοὺς εἰς τὸ ὄνομα τοῦ πατρὸς καὶ τοῦ υἱοῦ καὶ τοῦ ἁγίου πνεύματος,
teaching them o to observe all that p I have commanded you.
διδάσκοντες αὐτοὺς τηρεῖν πάντα ὅσα ἐνετειλάμην ὑμῖν·
And behold, q I am with you always, to r the end of the age.”
καὶ ἰδοὺ ἐγὼ μεθ᾽ ὑμῶν εἰμι πάσας τὰς ἡμέρας ἕως τῆς συντελείας τοῦ αἰῶνος.
And Jesus came and said to them, “All authority in heaven and on earth has been given to me.
Ground of 19-20
Go therefore and make disciples of all nations,
baptizing them in the name of the Father and of the Son and of the Holy Spirit,
Manner of 19a
teaching them to observe all that I have commanded you.
And behold, I am with you always, to the end of the age.”