Under Covenant, Jesus preached what is called "the gospel of the kingdom". He made it clear that after that gospel was preached to all the world, the end would come.
Matthew 24:14 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.
Under Grace, Paul preached his "my gospel" to everyone under heaven, but the end never came.
Colossians 1:23 ...the gospel, which ye have heard, and which was preached to every creature which is under heaven; whereof I Paul am made a minister;
Titus 2:11 For the grace of God that bringeth salvation hath appeared to all men,
So ask yourself this:
*If Jesus said the "gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come"
*And Paul preached the gospel to "every creature which is under heaven"
*Then why didn't the end come as Christ prophesied?
There is only one logical answer. Paul's gospel could NOT have been "the gospel of the kingdom".
Jesus and Paul didn't preach the same gospel, and is why nowhere in any of Paul's thirteen letters does he mention "the gospel of the kingdom".
"The gospel of the kingdom" that Jesus spoke of never made it to all nations. Jesus was rejected by Gods chosen nation Israel, who had to receive it FIRST before it could be broadcast and offered to all the nations under heaven. There was an ORDER to it.
Acts 1:8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
The order was:
Second "all Judaea"
Fourth "unto the uttermost part of the earth."
Israel's "gospel of the kingdom" was offered in the books of Matthew, Mark, Luke, and John, and in the first seven chapters of the book of Acts. But due to their rejection, in Acts chapter 9 we find where the Lord made an UNPROPHESIED return to the Damascus road where he met Saul of Tarsus (Paul) and gave him "the gospel of the grace of God".
Regardless of what tradition has taught, if you're a bible believer it should be quite obvious that there is more than one gospel in your bible. Not more than one for TODAY, but more than one in the bible. Today there is only ONE "gospel of your salvation" and Jesus gave it to Paul to give to you.
"Before the truth can set you free, you need to know which lie is holding you hostage."