Matthew 28:20

Lo, I am with you - That is, by my Spirit, my providence, my attending counsel and guidance. I will strengthen, assist, and direct you. This also proves that Christ is divine. If he is a mere man, or a creature, though of the highest order, how could he promise to be “with” his disciples “always,” or at all? They would be scattered far and wide. His disciples would greatly increase. If he was “with them” always, he was God; for no finite creature could thus be present with many people scattered in different parts of the world.

Unto the end of the world - The word rendered “world,” here, sometimes means “age or state” and by some it has been supposed to mean, I will be with you until the end of this “age,” or during the continuance of the Jewish state, to the destruction of Jerusalem. But as the presence of Christ was no less necessary after that than before, there seems to be no propriety in limiting the promise to his own age. It may therefore be considered as a gracious assurance that he would aid, strengthen, guide, and defend all his disciples, but more especially his ministers, to the end of time.