Verses with the word dreadful in the Old Testament (9 verses):

Genesis 28:17
And he was afraid, and said, How dreadful is this place! this is none other but the house of God, and this is the gate of heaven.

Job 15:21
A dreadful sound is in his ears: in prosperity the destroyer shall come upon him.

Ezekiel 1:18
As for their rings, they were so high that they were dreadful; and their rings were full of eyes round about them four.

Daniel 7:7
After this I saw in the night visions, and behold a fourth beast, dreadful and terrible, and strong exceedingly; and it had great iron teeth: it devoured and brake in pieces, and stamped the residue with the feet of it: and it was diverse from all the beasts that were before it; and it had ten horns.

Daniel 7:19
Then I would know the truth of the fourth beast, which was diverse from all the others, exceeding dreadful, whose teeth were of iron, and his nails of brass; which devoured, brake in pieces, and stamped the residue with his feet;

Daniel 9:4
And I prayed unto the LORD my God, and made my confession, and said, O Lord, the great and dreadful God, keeping the covenant and mercy to them that love him, and to them that keep his commandments;

Habakkuk 1:7
They are terrible and dreadful: their judgment and their dignity shall proceed of themselves.

Malachi 1:14
But cursed be the deceiver, which hath in his flock a male, and voweth, and sacrificeth unto the LORD a corrupt thing: for I am a great King, saith the LORD of hosts, and my name is dreadful among the heathen.

Malachi 4:5
Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD: