The answer is: To bear witness of the light

John 1:6-7

John the Baptist kicks off the New Testament as a key figure with a message of preparation and repentance. When it says he was sent "to bear witness of the light," it introduces an overarching theme in the Gospel of John—light versus darkness.

This theme resonates deeply, as John uses the term "light" more than any other Gospel writer. In the broader tapestry of Scripture, light often symbolizes truth, holiness, and divine presence. In Genesis, God’s first act was creating light—“Let there be light!” That divine spark embodies hope and guidance, echoing the role of John as a beacon pointing others toward something greater.

Interesting bit: John the Baptist's rugged persona—think camel hair attire and a wild diet of locusts—wasn't just shock value; it also reflected the ancient prophetic style which called for imminent change. With this imagery, he became a symbolic link to Old Testament prophets like Elijah, who is prophesied to return before the coming of the Messiah.

Moreover, note how Jesus speaks of John later, saying he’s the greatest among those born of women (not meaning to diminish women, of course!). This sets up an intriguing recognition of John's vital role in the salvation narrative, showcasing that preparation often precedes realization.

By the time we encounter Jesus, thanks to John’s witness, it’s as if the stage has been set, and the audience is primed for something transformative. It’s a classic setup for a story still echoing across the ages.