“And the men which journeyed with him stood speechless, hearing a voice, but seeing no man.”—Acts 9:7.
“And they that were with me saw indeed the light, and were afraid; but they heard not the voice of him that spake to me.”—Acts 22:9.
The statement in these two passages contains a variety, but no contrariety, the former observing that the men “heard a voice;” the latter, that “they heard not the voice of him that spoke” to Saul. They heard a sound which terrified them; but did not understand the meaning, which Saul did. The one says that they “saw the light;” the other that they “saw no man.” In all this there is no inconsistency.
The reason why they are said to have “seen no man” is not to distinguish them from Saul; for neither did he see the personage who spoke to him; but to account for their terror, or their being struck speechless. It must have been overwhelming to their minds to have heard a voice, and yet to see no person near from whom it should proceed.
The difference upon the whole, however, between the case of these men and Saul was great, and strongly marks the difference between mere convictions and true conversion. The voice of the Lord was heard by both; but to the one it was a mere general and indistinct sound; to the other it was a word that entered into his soul. They “saw the light, and were afraid;” but that was all: he saw, and heard, and understood, and felt, and inquired, “Who art thou, Lord?—Lord, what wilt thou have me to do?” Many hear the word in a general way, and see enough to make them tremble; but then it is truly effectual when it is addressed to us as the voice of one that speaks to us from heaven; when it disarms us of our enmity to Christ, excites in us the desire of knowing him, and makes us willing, without hesitation or delay, to obey his commandments.
Fuller, A. G. (1988). The Complete Works of Andrew Fuller: Memoirs, Sermons, Etc. (J. Belcher, Ed.) (Vol. 1, pp. 667–684). Harrisonburg, VA: Sprinkle Publications.