It was but 'the third hour of the day' when Peter stood up to speak; it must have been little after dawn when the brethren came together. How long they had been assembled we do not know, but we cannot doubt how they had been occupied. Many a prayer had gone up through the morning air, and, no doubt, some voice was breathing the united desires, when a deep, strange sound was heard at a distance, and rapidly gained volume, and was heard to draw near. Like the roaring of a tempest hurrying towards them, it hushed human voices, and each man would feel, 'Surely now the Gift comes!' Nearer and nearer it approached, and at last burst into the chamber where they sat silent and unmoving. But if we look carefully at Luke's words, we see that what filled the house was not agitated air, or wind, but 'a sound as of wind.' The language implies that there was no rush of atmosphere that lifted a hair on any cheek, or blew on any face, but only such a sound as is made by tempest. It suggested wind, but it was not wind. By that first symbolic preparation for the communication of the promised gift, the old symbolism which lies in the very word 'Spirit,' and had been brought anew to the disciples' remembrance by Christ's words to Nicodemus, and by His breathing on them when He gave them an anticipatory and partial bestowment of the Spirit, is brought to view, with its associations of life-giving power and liberty. 'Thou hearest the sound thereof,' could scarcely fail to be remembered by some in that chamber. But it is not to be supposed that the audible symbol continued when the second preparatory one, addressed to the eye, appeared. As the former had been not wind, but like it, the latter was not fire, but 'as of fire.' The language does not answer the question whether what was seen was a mass from which the tongues detached themselves, or whether only the separate tongues were visible as they moved overhead. But the final result was that 'it sat on each.' The verb has no expressed subject, and 'fire' cannot be the subject, for it is only introduced as a comparison. Probably, therefore, we are to understand 'a tongue' as the unexpressed subject of the verb. Clearly, the point of the symbol is the same as that presented in the Baptist's promise of a baptism 'with the Holy Ghost and fire.' The Spirit was to be in them as a Spirit of burning, thawing natural coldness and melting hearts with a genial warmth, which should beget flaming enthusiasm, fervent love, burning zeal, and should work transformation into its own fiery substance. The rejoicing power, the quick energy, the consuming force, the assimilating action of fire, are all included in the symbol, and should all be possessed by Christ's disciples.