The Gospel is Called the Gospel of Christ
Source: TTT
Romans 1:9, 16
God, whom I serve with my spirit in preaching the gospel of His Son, is my witness how constantly I remember you / I am not ashamed of the gospel, because it is the power of God for salvation to everyone who believes, first to the Jew, then to the Greek.
2 Corinthians 2:12
Now when I went to Troas to preach the gospel of Christ and a door stood open for me in the Lord,
1 Thessalonians 3:2
We sent Timothy, our brother and fellow worker for God in the gospel of Christ, to strengthen and encourage you in your faith,