Quote the scripture that you think is the "Gospel" message, so that you can show us what you are claiming the "gospel" message actually is, JLB.
Jesus preached the message of the Kingdom.
From that time Jesus began to preach and to say, "Repent, for the kingdom of heaven is at hand." Matthew 4:17
His disciples were sent out to preach the message that He preached.
11 And whoever will not receive you nor hear you, when you depart from there, shake off the dust under your feet as a testimony against them. Assuredly, I say to you, it will be more tolerable for Sodom and Gomorrah in the day of judgment than for that city!"
12 So they went out and preached that people should repent. Mark 6:11-12
Repent means to turn to God, which is turning away from Satan as Lord.
The message that Jesus commissioned Paul to preach and do.
15 So I said, 'Who are You, Lord?' And He said, 'I am Jesus, whom you are persecuting.
16 But rise and stand on your feet; for I have appeared to you for this purpose, to make you a minister and a witness both of the things which you have seen and of the things which I will yet reveal to you.
17 I will deliver you from the Jewish people, as well as from the Gentiles, to whom I now send you,
18 to open their eyes, in order to turn them from darkness to light, and from the power of Satan to God, that they may receive forgiveness of sins and an inheritance among those who are sanctified by faith in Me.' Acts 26:15-18
The way to receive the forgiveness of sins, is to repent, which is to turn away from Satan as lord to Jesus as Lord.
JLB