Matthew 28:10 The resurrected Christ instructs the women at the sepulchre to depart and bring word of his resurrection to them and that they should go into Galilee (
as Jesus told them in Matthew 26:32), and there they shall see him.
Matthew 28:16 Then the eleven disciples went away into Galilee, into a mountain where Jesus appointed them.
As you will recall, up to now, the Savior had limited His mortal ministry to the Jews. Now, though he instructs His Apostles to take the gospel to all nations. Not only is this a major change in policy, but it is a strong statement that all must have the opportunity to hear and understand the gospel of Jesus Christ.
Remember that the Jews considered themselves to be superior in the status of all other people, in the sight of God, because they were direct descendants of Abraham (Matthew 3:9). What Jesus now instructs is a clear reminder to these Apostles that their cultural background must be discarded in favor of the true doctrine that all souls are of equal worth in the sight of God.
Matthew 28:18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.
19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost;
20 Teaching them to observe all things whatsoever I have commmanded you: and, lo, I am with you always, even unto the end of the world. Amen
Jesus stays 40 days with his disciples before he ascends into heaven.