Matthew 3:17
17. And lo a voice from heaven, saying, This is—Mark and Luke give it in the direct form, "Thou art." (Mr 1:11; Lu 3:22).
my beloved Son, in whom I am well pleased—The verb is put in the aorist to express absolute complacency, once and for ever felt towards Him. The English here, at least to modern ears, is scarcely strong enough. "I delight" comes the nearest, perhaps, to that ineffable complacency which is manifestly intended; and this is the rather to be preferred, as it would immediately carry the thoughts back to that august Messianic prophecy to which the voice from heaven plainly alluded (Isa 42:1), "Behold My Servant, whom I uphold; Mine Elect, IN WHOM MY SOUL DELIGHTETH." Nor are the words which follow to be overlooked, "I have put My Spirit upon Him; He shall bring forth judgment to the Gentiles." (The Septuagint perverts this, as it does most of the Messianic predictions, interpolating the word "Jacob," and applying it to the Jews). Was this voice heard by the by-standers? From Matthew's form of it, one might suppose it so designed; but it would appear that it was not, and probably John only heard and saw anything peculiar about that great baptism. Accordingly, the words, "Hear ye Him," are not added, as at the Transfiguration. Matthew 27:51
51. and the earth did quake—From what follows it would seem that this earthquake was local, having for its object the rending of the rocks and the opening of the graves.
and the rocks rent—"were rent"—the physical creation thus sublimely proclaiming, at the bidding of its Maker, the concussion which at that moment was taking place in the moral world at the most critical moment of its history. Extraordinary rents and fissures have been observed in the rocks near this spot. Matthew 28:2
Acts 2:2
2. And suddenly there came a sound from heaven, as of a rushing mighty wind, &c.—"The whole description is so picturesque and striking that it could only come from an eye-witness" [OLSHAUSEN]. The suddenness, strength, and diffusiveness of the sound strike with deepest awe the whole company, and thus complete their preparation for the heavenly gift. Wind was a familiar emblem of the Spirit (Eze 37:9; Joh 3:8; 20:22). But this was not a rush of actual wind. It was only a sound "as of" it.
Acts 4:31
31-37. place was shaken—glorious token of the commotion which the Gospel was to make (Ac 17:6; compare Ac 16:26), and the overthrow of all opposing powers in which this was to issue.
they were all filled with the Holy Ghost, and spake, &c.—The Spirit rested upon the entire community, first, in the very way they had asked, so that they "spake the word with boldness" (Ac 4:29, 31); next, in melting down all selfishness, and absorbing even the feeling of individuality in an intense and glowing realization of Christian unity. The community of goods was but an outward expression of this, and natural in such circumstances.