That which was from the beginning, that which we have heard, that which we have seen with our eyes, that which we saw, and our hands touched, concerning the Word of life
Which we have seen with our eyes - That is, pertaining to his person, and to what he did. “I have seen him; seen what he was as a man; how he appeared on earth; and I have seen whatever there was in his works to indicate his character and origin.” John professes here to have seen enough in this respect to furnish evidence that he was the Son of God. It is not hearsay on which he relies, but he had the testimony of his own eyes in the case. Compare the notes at 2 Peter 1:16.