'Terrible' in the Bible

We traveled from Horeb, and went through all that great and terrible wilderness which you saw, by the way to the hill country of the Amorites, as Yahweh our God commanded us; and we came to Kadesh Barnea.

who led you through the great and terrible wilderness, [in which were] fiery serpents and scorpions, and thirsty ground where there was no water; who brought you forth water out of the rock of flint;