Jesus commissioned His disciples to go out amongst all the nations, even the whole world, and do what? Baptize them and teach them to observe the things that He had commanded them. So just as God created man and, in a way, commissioned him to be fruitful and multiply, to expand the human race, to grow in number and expand across the face of the earth, here God is saying, go out amongst those same people and to as many that God will call at this time, baptize, teach, and instruct. God is showing how He will teach and educate His people according to His way. He provides everything needed along the way.