Consider:
I. What Christ could not, as a perfectly pure and holy Being, have suffered for sins. (1) One element of suffering for sin, and that a most bitter one, of which Christ could have no direct experience, is conscious guilt. Wide as is the range of its sympathies with the sinful, there is a line beyond which a nature which is itself sinless can never pass. Into that dismal region overshadowed by the gloom of guilt, and where rage the furies of an avenging conscience, He who "was in all points tempted" like as we are, yet without sin, could never follow us. (2) Another element of suffering for sin of which a perfectly holy nature could have no experience is a personal sense of Divine wrath. Betwixt the experience of a guilty soul writhing under the frown of God and His there is an impassable gulf. (3) Nor, finally, though Christ tasted death for every man, could He ever experience personally that which constitutes to the sinner the very bitterness of death: the fear of what comes after death.
II. What kind of suffering for sin may be conceived of as noble and worthy, and so not impossible to a pure and holy nature. I notice (1) that which a pure and holy nature must feel from the mere contiguity of evil; (2) the reflected or borrowed shame and pain which noble natures feel for the sins of those with whom they are closely connected. (3) Christ suffered for sin, not only as bearing relatively its guilt, but also as its Victim.
J. Caird, Sermons,p. 167.
Reference: 1 Peter 4:13. W. Boyd-Carpenter, Christian World Pulpit,vol. xiii., p. 97.