Romans 1:1
Paul, a servant of Jesus Christ, called to be an apostle, separated to the gospel of God,
Torrey's Topical Textbook—AKJV

1 Thessalonians 2:8
So being affectionately desirous of you, we were willing to have imparted to you, not the gospel of God only, but also our own souls, because you were dear to us.
Torrey's Topical Textbook—AKJV

1 Peter 4:17
For the time is come that judgment must begin at the house of God: and if it first begin at us, what shall the end be of them that obey not the gospel of God?
Torrey's Topical Textbook—AKJV