We have heard out of the law - the scriptures of the Old Testament (referring to such places as Psa 89:28, Psa 89:29; Psa 110:4; Dan 2:44; Dan 7:13, Dan 7:14).
that Christ - the Christ “endureth for ever.”
and how sayest thou, The Son of Man must be lifted up, etc. - How can that consist with this “uplifting?” They saw very well both that He was holding Himself up as the Christ and a Christ to die a violent death; and as that ran counter to all their ideas of the Messianic prophecies, they were glad to get this seeming advantage to justify their unyielding attitude.