Whether the angel guardian ever forsakes a man?

Objections

Objection 1 : It would seem that the angel guardian sometimes forsakes the man whom he is appointed to guard. For it is said (Jer. 51:9) in the person of the angels: "We would have cured Babylon, but she is not healed: let us forsake her." And (Is. 5:5) it is written: "I will take away the hedge"---that is, "the guardianship of the angels" [gloss]---"and it shall be wasted."
Objection 2 : Further, God's guardianship excels that of the angels. But God forsakes man at times, according to Ps. 21:2: "O God, my God, look upon me: why hast Thou forsaken me?" Much rather therefore does an angel guardian forsake man.
Objection 3 : Further, according to Damascene (De Fide Orth. ii, 3), "When the angels are here with us, they are not in heaven." But sometimes they are in heaven. Therefore sometimes they forsake us.