Ellicott's Commentary for English Readers - Matthew 28:20
(20) All things whatsoever I have commanded you.—The words obviously point, in the first instance, to the teaching of our Lord recorded in the Gospels—the new laws of life, exceeding broad and deep, of the Sermon on the Mount, the new commandment of Love for the inner life (John 13:34), the new outward ordinances of Baptism and the Supper of the Lord. But we may well believe that they went further than this, and that the words may cover much unrecorded teaching which they had heard in the... read more
Ellicott's Commentary for English Readers - Matthew 28:19
(19) Teach all nations.—Better, make disciples of all the heathen. The Greek verb is the same as that which is rendered “instructed” in Matthew 13:52, and is formed from the noun for “disciple.” The words recognise the principle of a succession in the apostolic office. The disciples, having learnt fully what their Master, their Rabbi, had to teach them, were now to become in their turn, as scribes of the kingdom of heaven, the teachers of others. It is, to say the least, suggestive that in this... read more