Thus Andrew became the first preacher and witness to the Messiahship of Christ

“Thus Andrew, one of John’s disciples, was the first to come to Christ and make His acquaintance. After this he departed and conversed with his brother Simon. The gist of his words might have been: “Do you want to hear some wonderful news? John, our master, preached about this man, telling us that He is the Lamb of God and the Messiah.” Without a doubt John had often preached on Christ at great length. Andrew had given John’s words credence, and now he came to his brother and said: “We have found the Messiah,” the very man to whom John has pointed and declared that He was the Messiah. Thus Andrew became the first preacher and witness to the Messiahship of Christ. This is the message that he relayed to his brother Peter upon meeting him: that he had found Him of whom the Law of Moses and the prophets had written. This took place at Bethsaida, whence Peter and Andrew, animated by the conviction that they have found the Messiah foretold by the prophets, set out to come to Christ.” – Martin Luther on St. Andrew