He must become greater and greater, and I must become less and less. “He has come from above and is greater than anyone else. [John 3:30-31 NLT]
I think that John the Baptist heard the incarnational story all of his life. From his mom and from his second cousin Mary. The tale of how the angel visited Mary and told her of a son that would be conceived by the Holy Spirit. And how John leapt in his mom's womb when a pregnant Mary visited their home.
From early on John knew who Jesus was. He knew that cousin was a hybrid. Part earthly. Part heavenly. John believed the story and accepted his role in it. It is why he lived simply. Why he preached repentance. Why he baptized. He humbly became less so that the One from above would become more.
With John I agree Lord. You must become greater and greater, and I must become less and less.
... this devotion is part of a series about John the Baptist.