William Burkitt on John 1:35

It is evident that John's disciples were never very willing to acknowledge Jesus for the Messias, because they thought he did shadow and cloud their Master. See therefore the sincerity of the holy Baptist; he takes every opportunity to draw off the eyes of his disciples from himself, and fix them upon Christ; he saith to two of his disciples, Behold the Lamb of God; as if he had said, "Turn your eyes from me to Christ, take less notice of me his minister; but behold your and my Lord and Master, Behold the Lamb of God."

Learn hence, That the great design of Christ's faithful ministers, is to set people upon admiring of Christ, and not magnifying themselves. Oh! 'tis their great ambition and desire, that such as love and respect them, and honour their ministry, may be led by them to Christ; to behold and admire him, to accept of him, and to submit unto him: John said to his disciples, Behold the Lamb of God.