Hebrews 12:28-29

Wherefore, receiving a kingdom that cannot be shaken, let us have grace through which we may serve God acceptably, with piety and fear;

Revelation 1:17

And when I saw him I fell at his feet as dead; and he put his right hand on me, saying, Fear not; I am the first and the last

Revelation 15:4

who shall not fear thee, Lord, and glorify thy name? For thou only art holy, for all the nations shall come and worship before thee, for thy righteous ordinances have been made manifest.

Treasury of Scripture Knowledge

Summary

But David could not go before it to inquire of God: for he was afraid because of the sword of the angel of the LORD.

Bible References

He was afraid

Hebrews 12:28
Wherefore, receiving a kingdom that cannot be shaken, let us have grace through which we may serve God acceptably, with piety and fear;
Revelation 1:17
And when I saw him I fell at his feet as dead; and he put his right hand on me, saying, Fear not; I am the first and the last
Revelation 15:4
who shall not fear thee, Lord, and glorify thy name? For thou only art holy, for all the nations shall come and worship before thee, for thy righteous ordinances have been made manifest.