This probably means that Job's visitors did not recognize him at first, when they saw him at a distance. Job looked very different than usual because of his grief and because of the sores covering his body. Alternate translation: "they barely recognized him"
Here "raised their voices" is an idiom that means they became loud. Alternate translation: "They wept out loud" or "They wept loudly" (See: [[rc://en/ta/man/jit/figs-idiom]])