Mark
King James Version (KJV)

“And he said unto them, Go ye into all the world, and preach the gospel to every creature.”
King James Version (KJV)
16:15 Go ye into all the world, and preach the Gospel to every creature - Our Lord speaks without any limitation or restriction. If therefore every creature in every age hath not heard it, either those who should have preached, or those who should have heard it, or both, made void the counsel of God herein. #Mt 28:19|.
Mr 16:15 He said unto them. Probably not at the time referred to in Mr 16:14, but later. The Lord appeared many times during the forty days. These words may have been spoken at the great meeting in Galilee (Mr 16:7 Mt 28:18-20). Go ye into all the world. Jesus is the world's Savior; he died for all; the gospel must be preached to all. In the first commission they were sent only to Jews (Mt 10:6). Preach the gospel. The good news of salvation through Christ; the way of life. To every creature. To every mortal. None are denied the Savior if they will have him.