1. Preach the gospel.
2. Explain the gospel.
3. Teach the gospel.
4. Pronounce the gospel.
5. Proclaim the gospel.
6. Share the gospel.
7. Discuss the gospel.
8. Present the gospel.
9. Clarify the Gospel.
10. Declare the Gospel.

How then will they call on Him in whom they have not believed? How will they believe in Him whom they have not heard? And how will they hear without a preacher? (Romans 10:14)

There’s no other way.