What does the Bible say about John the Baptist's role?

The Bible describes John the Baptist as a significant figure in the New Testament and the last prophet of the Old Testament era. In John 1:23, he defines his role by quoting the prophet Isaiah, saying, 'I am the voice of one crying in the wilderness, Make straight the way of the Lord.' This highlights his purpose in preparing the hearts of people for the arrival of the Messiah. John emphasized that he was not the Christ, but rather a servant of the one to come, fully aware of his humble position.