/summa/TP/TPII/TP_Q43:
We must now consider the miracles worked by Christ: (1) In general; (2) Specifically, of each kind of miracle; (3) In particular, of His transfiguration.
Concerning the first, there are four points of inquiry:
(1) Whether Christ should have worked miracles?
(2) Whether He worked them by Divine power?
(3) When did He begin to work miracles?
(4) Whether His miracles are a sufficient proof of His Godhead?