The Wonderful Works Of God
1. Spirit enabled language vv. 1-4
a. The unity that proceeds the Spirit vv. 1-2
b. The signs that proclaim the Spirit vv. 3-4
the fire-like appearance presented itself at first, as it were, in a single body, and then suddenly parted in this direction and that; so that a portion of it rested on each of those present” (Hackett). The idea is not that each tongue was cloven, but each separate tongue looked like fire, not real fire, but looking like (ὡσει [hōsei], as if) fire.
It is also important to observe that what is here called a ‘filling’ is called a ‘baptizing’ (1:5 and 11:16), a ‘pouring out’ (2:17f.; 10:45), and a ‘receiving’ (10:47).
Of course Acts 2:1–4 does not state that Spirit baptism took place at Pentecost. However, 1:5 anticipates it and 11:15–16 refers back to it as having occurred at Pentecost. The church, therefore, came into existence then.
Other than their native tongues. Each one began to speak in a language that he had not acquired and yet it was a real language and understood by those from various lands familiar with them. It was not jargon, but intelligible language.