and from without,
according to Ps. 159:4: "In this way wherein I walked, they have
hidden a snare for me." And therefore as guardians are appointed for
men who have to pass by an unsafe road, so an angel guardian is
assigned to each man as long as he is a wayfarer. When, however, he
arrives at the end of life he no longer has a guardian angel; but in
the kingdom he will have an angel to reign with him, in hell a demon
to punish him.

Reply Obj. 1: Christ as man was guided immediately by the Word of
God: wherefore He needed not be guarded by an angel. Again as regards
His soul, He was a comprehensor, although in regard to His passible
body, He was a wayfarer. In this latter respect it was right that He
should have not a guardian angel as superior to Him, but a
ministering angel as inferior to Him. Whence it is written (Matt.
4:11) that "angels came and ministered to Him."

Reply Obj. 2: In the state of innocence man was not threatened
by any peril from within: because within him all was well ordered, as
we have said above (Q. 95, AA. 1, 3). But peril threatened from
without on account of the snares of the demons; as was proved by the
event. For this reason he needed a guardian angel.

Reply Obj. 3: Just as the foreknown, the infidels, and even
Antichrist, are not deprived of the interior help of natural reason;
so neither are they deprived of that exterior help granted by God to
the whole human race--namely the guardianship of the angels. And
although the help which they receive therefrom does not result in
their deserving eternal life by good works, it does nevertheless
conduce to their being protected from certain evils which would hurt
both themselves and others. For even the demons are held off by the
good angels, lest they hurt as much as they would. In like manner
Antichrist will not do as much harm as he would wish.
_______________________

FIFTH ARTICLE [I, Q. 113, Art. 5]

Whether an Angel Is Appointed to Guard a Man from His Birth?

Objection 1: It would seem that an angel is not appointed to guard
a man from his birth. For angels are "sent to minister for them who
shall receive the inheritance of salvation," as the Apostle says
(Heb. 1:14). But men begin to receive the inheritance of salvation,
when they are baptized. Therefore an angel is appointed to guard a
man from the time of his baptism, not of his birth.

Obj. 2: Further, men are guarded by angels in as far as angels
enlighten and instruct the