Then they (the Levites) said to him, “Who are you? Let us have an answer for those who sent us. What do you say about yourself? He said, I am the voice of the one crying out in the wilderness, make straight the way of the Lord, as the prophet Isiah said”.
John the Baptist is explaining in John 1:22-23 that he is not the Messiah he is leading the way to the Messiah. He is showing everyone the way as he is a messenger of God. No matter who we are we all have the ability to show others the way to Jesus. Just like John the Baptist we can lead others in our daily words and actions to comfort others and show them the way to God.
We can be messengers of God just like John the Baptist.