The textual issue in Exodus 19:18 contrasts “the whole mountain quaked” (MT) with “all the people trembled” (LXX). The MT reading is strongly preferred.
Commentary on the Old Testament Text of Exodus 18:6
Exodus 18:6 preserves Jethro’s own words in the Masoretic Text, while other versions smooth the narrative by inserting a messenger.
Commentary On the Old Testament Text Exodus 14:25
Exodus 14:25 shows Jehovah disabling Egypt’s chariots, with the MT reading “removed the wheels” supported over “clogged” from versions.
Old Testament Textual Commentary on Exodus 10:19
Exodus 10:19 shows Jehovah driving the locusts into the “Sea of Reeds,” preserved in the Hebrew text, not the LXX’s “Red Sea.”

