Paul calls it the GOSPEL OF CHRIST.
Romans 15:19 by the power of signs and wonders, through the power of the Spirit of God. So from Jerusalem all the way around to Illyricum, I have fully proclaimed the gospel of Christ.
1 Corinthians 9:12 If others have this right of support from you, shouldn’t we have it all the more? But we did not use this right. On the contrary, we put up with anything rather than hinder the gospel of Christ.
2 Corinthians 2:12[ Ministers of the New Covenant ] Now when I went to Troas to preach the gospel of Christ and found that the Lord had opened a door for me,
2 Corinthians 9:13 Because of the service by which you have proved yourselves, others will praise God for the obedience that accompanies your confession of the gospel of Christ, and for your generosity in sharing with them and with everyone else.
2 Corinthians 10:14 We are not going too far in our boasting, as would be the case if we had not come to you, for we did get as far as you with the gospel ofChrist.
Galatians 1:7 which is really no gospel at all. Evidently some people are throwing you into confusion and are trying to pervertthe gospel of Christ.
Philippians 1:27 [ Life Worthy of the Gospel ] Whatever happens, conduct yourselves in a manner worthy of the gospel of Christ. Then, whether I come and see you or only hear about you in my absence, I will know that you stand firm in the one Spirit, striving together as one for the faith of the gospel
1 Thessalonians 3:2 We sent Timothy, who is our brother and co-worker in God’s service in spreading the gospel of Christ, to strengthen and encourage you in your faith,
Paul also calls it OUR GOSPEL:
2 Corinthians 4:3 And even if our gospelis veiled, it is veiled to those who are perishing.
1 Thessalonians 1:5 because our gospel came to you not simply with words but also with power, with the Holy Spirit and deep conviction. You know how we lived among you for your sake.
2 Thessalonians 2:14 He called you to this through our gospel, that you might share in the glory of our Lord Jesus Christ.
Paul AND PETER call it the Gospel of God.
Romans 1:1 Paul, a servant of Christ Jesus, called to be an apostle and set apart for the gospel of God—
Romans 15:16 to be a minister of Christ Jesus to the Gentiles. He gave me the priestly duty of proclaiming the gospel of God, so that the Gentiles might become an offering acceptable to God, sanctified by the Holy Spirit.
2 Corinthians 11:7 Was it a sin for me to lower myself in order to elevate you by preaching the gospel of God to you free of charge?
1 Thessalonians 2:8 so we cared for you. Because we loved you so much, we were delighted to share with you not only the gospel of God but our lives as well.
1 Thessalonians 2:9 Surely you remember, brothers and sisters, our toil and hardship; we worked night and day in order not to be a burden to anyone while we preached the gospel of God to you.
1 Peter 4:17 For it is time for judgment to begin with God’s household; and if it begins with us, what will the outcome be for those who do not obey the gospel of God?
1 Thessalonians 2:2 We had previously suffered and been treated outrageously in Philippi, as you know, but with the help of our God we dared to tell you his gospel in the face of strong opposition.
There is only one Gospel, and it is God's Gospel, the Gospel of Christ, Paul's Gospel, and OUR GOSPEL.
The gospel of God, the Gospel of Christ, Paul’s gospel, and our gospel.