The Pulpit Commentary - Exodus 19:16
There were thunders . Literally, "voices," as in Exodus 9:23 ; but there can be no doubt that "thunder" is meant. A thick cloud . Compare above, Exodus 9:9 , and the comment ad loc. The voice of the trumpet . Literally, "a trumpet's voice." The word used for "trumpet" is not the same as in Exodus 9:13 ; but the variation does not seem to have any importance. read more
The Pulpit Commentary - Exodus 19:15
Come not at your wives . Compare 1 Samuel 21:4 , 1 Samuel 21:5 ; 1 Corinthians 7:5 . A similar obligation lay on the Egyptian priests (Porphyr. De Abstin . 4.7); and the idea which underlies it was widespread in the ancient world The subject is well treated, from a Christian point of view, by Pope Gregory the First, in his answers to S . Augustine's questions (Bode, Hist . Eccl . 2.). read more