tine says
(QQ. lxxxiii, qu. 14): "If He deceives He is not the Truth; yet
Christ is the Truth." Consequently, it seems that Christ ought not to
have appeared to the disciples "in another shape."

Obj. 2: Further, nothing can appear in another shape than the one it
has, except the beholder's eyes be captivated by some illusions. But
since such illusions are brought about by magical arts, they are
unbecoming in Christ, according to what is written (2 Cor. 6:15):
"What concord hath Christ with Belial?" Therefore it seems that
Christ ought not to have appeared in another shape.

Obj. 3: Further, just as our faith receives its surety from
Scripture, so were the disciples assured of their faith in the
Resurrection by Christ appearing to them. But, as Augustine says in
an Epistle to Jerome (xxviii), if but one untruth be admitted into
the Sacred Scripture, the whole authority of the Scriptures is
weakened. Consequently, if Christ appeared to the disciples, in but
one apparition, otherwise than He was, then whatever they saw in
Christ after the Resurrection will be of less import, which is not
fitting. Therefore He ought not to have appeared in another shape.

_On the contrary,_ It is written (Mk. 16:12): "After that He appeared
in another shape to two of them walking, as they were going into the
country."

_I answer that,_ As stated above (AA. 1, 2), Christ's Resurrection
was to be manifested to men in the same way as Divine things are
revealed. But Divine things are revealed to men in various ways,
according as they are variously disposed. For, those who have minds
well disposed, perceive Divine things rightly, whereas those not so
disposed perceive them with a certain confusion of doubt or error:
"for, the sensual men perceiveth not those things that are of the
Spirit of God," as is said in 1 Cor. 2:14. Consequently, after His
Resurrection Christ appeared in His own shape to some who were well
disposed to belief, while He appeared in another shape to them who
seemed to be already growing tepid in their faith: hence these said
(Luke 24:21): "We hoped that it was He that should have redeemed
Israel." Hence Gregory says (Hom. xxiii in Evang.), that "He showed
Himself to them in body such as He was in their minds: for, because
He was as yet a stranger to faith in their hearts, He made pretense
of going on farther," that is, as if He were a stranger.

Reply Obj. 1: As Augustine says (De Qq. Evang. ii), "not everything
of w