John the Baptist was the primary herald of Christ in his day, but the task of bearing witness to the Savior was not laid solely upon him. Jesus Himself commissioned first the apostles, and secondly, the entire church to testify to the grace of God manifest in His life, death, and resurrection. Our witness will only be effective if, as with John, the surrounding culture sees that the church is different. Is your manner of life different than that of an unbeliever’s?
For further study:
The Bible in a year: