The Gospel as a word of Salvation is unto the saved, the redeemed. The preacher doesnt know who the saved, the redeemed are, but God does. So the Gospel is taken by the Spirit and reveals it to the saved. Whenever a Preacher preaches the Gospel, hes at the mercy of God on whether or not its a word of salvation to the redeemed elect, or if its a word of death to the non elect vessel of wrath.The gospel is for all which is why it is to be preached to all
Mark 16:15 (KJV)
15 And he said unto them, Go ye into all the world, and preach the gospel to every creature.
You are certifying your hyper Calvinism