"To accept the gospel" means to willingly embrace and believe in the teachings, message, and truths of the Christian faith as described in the Bible, particularly about Jesus Christ, his life, death, and resurrection. Full definition
It is by Tradition that we accept Matthew, Mark, Luke, and John and do not accept the gospels of Thomas or Peter. (firstthings.com)
No one who does not accept the Gospel of our Lord Jesus Christ will ever enter the kingdom of heaven! (religion.blogs.cnn.com)
One reason the Jewish people did not accept the gospel message (from Jesus or Paul) is that it threatened their exalted position as God's only «chosen» people. (redeeminggod.com)