Matthew 28:19-20

Matthew 28:19-20. Baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: teaching them to observe all things whatsoever I have commanded you:

There is teaching again. It is as much the duty of the Christian to teach after baptism as to teach before baptism; he must be ever teaching. Hence believers are always to be learners, since Christ would have his servants always to be teachers: "Teaching them to observe all things whatsoever I have commanded you." We are not to invent a gospel; we are not to change, and shift, and cut, and shape it to meet the advancement of the age; Christ’s command is plain: "Teaching them to observe all things whatsoever I have commanded you."