YES!
We are ALL sinners, deserving the LAWS required payment = judgment & DEATH!
Gospel = Good news. What's the good news? God via his loving merciful grace, has provided sinners a way/path to a full pardon.
God, 1st revealed his plan of redemption/sin forgiveness/reconciliation to Adam & Eve. When he covered them with/in sacrificed animal skins (Gen 3:21). Later on Mt Moriah, God, reveals his plan of redemption/sin forgiveness/reconciliation to Abraham. Abraham names the place: Jehovahjireh
Gen 22:14 And Abraham called the name of that place Jehovahjireh: as it is said to this day, In the mount of the LORD it shall be seen.
(NOTE: Jehovahjireh means = The Lord Will Provide. Ok, PROVIDE what? A SACRIFICE! The promised seed/Christ: = Is the redemptive SACRIFICE/Atonement!)
Next God calls out a people, the Nation of Israel. He gives them the LAW (works required) a sacrifical system (to cover "NOT" remove sin) and promised them a King (Messiah) that would redeem (completly "REMOVE" thier sin) them.
The gospel of the kingdom message was to the Nation of Israel only. Based on, the identity of & belief that, Jesus was the OT promised Messiah (Matt 16:13-16, Jn 11:25-27, Jn 3:18, Acts 2:21 & 38, 3:6 & 16, 4:7, 10, 12, 17, 18, 30, 5.28, 40, 41, 8:12 & 16, 9:14, 15, 21, 27, 10:43 & 48). This gospel's focus was the identity of the promised coming Messiah & the to collective Nation of Israel only. ONLY FAITH/BELIEF IN WHO HE WAS """THE PROMISED MESSISH""" WAS REQUIRED.
Christ's Death, Burial & Rerurrection """WAS NOT""" the gospel of the kingdom message. It's true Jesus had told the 12 about his coming suffering. And they DIDN'T have a clue. (Lk 18:34) If they knew, why were they suprised & in disbelief at his resurrection?
There were NO gentiles on Mt Sinai when Moses gives the law. John the Baptist, baptizes NO gentiles in the wilderness. NO gentiles receive the Holy Spirit on the Temple Mt on the day of Pentecost in Acts 2. There are NO gentiles members in/of the early church in Jerusalem.
Scripture records salvation is FIRST to/for the Jew, then to the gentile. (Rom 1:16, Rom 2:9-10)
Peter is was the FIRST to openly recognize/confess that Jesus was the promised Messiah. Jesus promises Peter the keys to the kingdom (Matt 16:15-19)
Peter gets & uses these keys: 1st opening the door to the Holy Spirit at Pentecost, JEWS ONLY! 2ndly opening salvations door, via the Holy Spirit, to gentiles at Cornelius house. (Acts 10) At least 7 years after Pentecost. Peter goes back to Jerusalem.
Enter Paul: The RISEN Christ's chosen apostle sent to the Gentiles (Acts 26:17)
Paul is given a different message: It requires faith in Christ's death, burial & resurrection. (1 Cor 15:1-4)
Gal 1:11-12 Paul says he received HIS gospel/good news/message via direct revelation, from the RISEN Lord. Vs 15: at the time chosen by God. Vs 16: God reveal's to Paul the gospel of the grace of God (Acts 20:24. Paul calls his RISEN Christ given message the revelation of the mystery (Eph 3:3) Back to Gal 1 Vs:17 Paul goes to Arabia)
Gal 4:25 For this Agar is mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children
(NOTE: Paul receives his message on Mt Sinai in Arabia. Same place God gave Moses the law. Its here on Mt Sinai where Paul is taken to the 3rd heaven (2 Cor 12:2-4)
Gal 2:1-2 14 yrs later, Paul goes via direct revelation from God to Jerusalem. And explains HIS RISEN Christ given message to the Apostles.
At the Council in Jersulem (Acts 15) after much disputing over gentiles keeping Mosaic law. An agreement is made & the apostles sent letters to all the Churches. You gentiles are """NOT""" under Mosaic Law!
After the destruction of the Temple. Paul’s gospel of grace message (Acts 20:24) completely supplants, the gospel of the kingdom message formally preached by Jesus & the 12.
The Gospel = Good News of salvation is alway's appropriated via FAITH. For Abraham via FAITH in a sacrifice to come. For the Jew under the Kingdom message via FAITH in who Jesus was. And to the New Tesatment Church/Body of Christ via FAITH in his FINISHED redemptive work. Found in Christ's death (sins required wage PAID) & resurrection (God's receipt, sins payment received & accepted).
One Gospel, always accessed via a FAITH choice. Different, way's/time frames/messages, of appropriating FAITH! Abraham by believing the sacrifice would come, Jew under the law by believing who Jesus was. And today to anyone that believes in Christ death & resurrection.