Salvation is as simple as hearing and receiving the preached Word. Millions have been saved over thousands of years by hearing and responding by faith to the "Good News" of the Gospel of Christ.
The Apostle Paul said, But we preach Christ crucified... That’s the central theme of the Gospel. It centers on the sacrifice Christ made on behalf of sinners. Christ lived, died, was buried, and rose again: that’s the Gospel message.
The Lord has placed us here to share the “Good News” we have received. Not everyone will respond and believe, but some will. It may sound foolish to some, but it is precious to me. Spread the "Good News".