What Do We Make of Angelic Visions and Other Supernatural Events in the Bible? (Luke 1:5-25)

From Norval Geldenhuys’ commentary on the Gospel of Luke (pp. 69-70):

“The history of the revelation of God as presented in the Bible is the history of the supernatural and the divine, which is brought into relation with, and acts upon, what is natural and human. What is exceptional to man is ordinary to God. What is supernatural in the eyes of man is natural to God. This we perceive quite clearly in the manner in which Luke describes this history of Zechariah and Elizabeth. He writes from the divine point of view. Thus, he does not argue the existence of angels, but describes in a most natural manner how God sent His heavenly messenger to Zechariah. The supernatural is here written down as the natural, and the exceptional as the usual. Everything that is supernatural in the Word of God is supernatural because it is above and outside our human understanding. Human considerations in this connection are, therefore, of no decisive importance. We accept it, not because we can understand or prove it by means of human comprehension, but because the living God has thus revealed it — knowing that what seems impossible for us is possible for Him, and that “the secret things belong unto the Lord our God; but the things that are revealed belong unto us and to our children” (Deut. 29:29).”