He has, this is a passage from the Bible:And he said unto them, Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned. Mark 16:15,16
And from that moment on Christianity and the message of God and the reelation of God has spread throughout the entire Globe.
It is written: And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come. Matthew 24:14
Even to the most remote parts of the World the Gospel has been taught and many have received salvation as a result of it.
And not all are his children, all are of His creation but it is up to the person to decide whether or not they are a Child of God, for it is written: But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name: John 1:12
I have to do business as of this moment, but please keep responding, for it is for the Goodness of God and His will for you.
And if this is not sufficient enough for you then i am sure that the Lord will send someone else.
I'll be back in a short while, til then God Bless!