He first found his own brother Simon and said to him, “We have found the Messiah” (which means Christ).
41. We have found the Messiah. The Evangelist has interpreted the Hebrew word Messiah (Anointed) by the Greek word Christ, in order to publish to the whole world what was secretly known to the Jews. It was the ordinary designation of kings, See Harmony of the Three Evangelists, volume 1 page 92, n. 2; and page 142, n. 2. as anointing was observed by them as a solemn rite.
We have here the turning over of two disciples from John to Jesus, and one of them fetching in a third, and these are the first-fruits of Christ's disciples; see how small the church was in its beginnings, and what the dawning of the day of its great things was. I. Andrew and another with him were the two that John Baptist had directed to Christ, Joh 1:37.
Commenting on John 1:37-42
He first findeth his own brother Simon,.... Either before the other disciple, or before he found any other person: after he and the other disciple departed from Christ, being affected with the grace bestowed upon him, and his heart warm with the conversation he had had with him, and transported with joy at finding the Messiah, goes in all haste in search of his relations...