Luke 12:5

But I am warning you about whom you should fear. Fear the One [i.e., God] who, after He has killed [i.e., the body], has power to throw [you] into hell [See note on Matt. 5:29]. Yes, I tell you, fear Him.

Revelation 15:4

O Lord, who will not fear [you] and honor your name, for only you are holy? [So], all the nations will come and worship in front of you, for your righteous deeds have been revealed."

Treasury of Scripture Knowledge

Summary

For the LORD is great, and greatly to be praised: he is to be feared above all gods.

Bible References

He is

Luke 12:5
But I am warning you about whom you should fear. Fear the One [i.e., God] who, after He has killed [i.e., the body], has power to throw [you] into hell [See note on Matt. 5:29]. Yes, I tell you, fear Him.
Revelation 15:4
O Lord, who will not fear [you] and honor your name, for only you are holy? [So], all the nations will come and worship in front of you, for your righteous deeds have been revealed."