We find this verse in the 20th Chapter of John. “Because thou hast seen me – Because you have looked upon my body, and seen the proofs that I am the same Saviour that was crucified.”
When told by the other Apostles that they have seen Jesus, after His crucifixion and resurrection, Thomas said, “Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe.” John 20:25
Days later Jesus returns to the Apostles and says to Thomas, “Put your finger here, see my hands. Reach out your hand and put it into my side. Stop doubting and believe.”
Thomas said to him, “My Lord and my God!” Then Jesus told him, “Because you have seen me, you have believed; blessed are those who have not seen and yet have believed.”
Jesus here approves the faith of Thomas, but more highly commends the faith of those who should believe without having seen.
Blessed – Happy, or worthy of divine approval. The Word signifies that “those who have not seen” would be in some respects more blessed than Thomas. They would manifest higher faith.
That have not seen … Those who should be convinced by the testimony of the Apostles, and by the influences of the Spirit. They would manifest stronger faith. All faith is of things not seen; and God blesses those most who most implicitly rely on his word.