John 6:36

But although God and this perfect satisfaction were brought so near them, they did not believe: ἀλλʼ εἶπον … πιστεύετε. Beza, Grotius, Bengel, Godet, Weiss, etc., understand that εἶπον refers to John 6:26. Euthymius, preferably, says εἰκὸς τοῦτο ῥηθῆναι μὲν, μὴ γραφῆναι δέ. Lampe gives the alternatives without determining. Undoubtedly, although the reference may not be directly to John 6:26, the ἑωράκατε means seeing Jesus in the exercise of His Messianic functions, doing the works given Him by the Father to do. But seeing is not in this case believing. It was found very possible to be in His company and to eat the provision He miraculously provided, and yet disbelieve. If so, what could produce belief? Might not His entire manifestation fail to accomplish its purpose?