Remigius of Auxerre
Catena Aurea · Matthäusevangelium 28
Mt 28, Verses 16–20English original
Then the eleven disciples went away into Galilee, into a mountain where Jesus had appointed them. And when they saw him, they worshipped him: but some doubted. And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. Go ye therefore, and teach all nations, 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: and, lo, I am with you alway, even unto the end of the world. Amen.
This is more fully told by Luke; how when the Lord after the Resurrection appeared to the disciples, in their terror they thought they saw a spirit.