en_tn_condensed/hab/03/16.md

I heard

You may indicate what it is that Habakkuk heard. Possible meanings are 1) "I heard everything in that vision" or 2) "I heard Yahweh approach like a great storm"

my inner parts trembled

"my heart beat rapidly" or "my stomach turned"

My lips quivered at the sound

Quivering lips is another spontaneous response that comes with great fear.

Decay comes into my bones

"My body goes limp, as if my bones were rotting"

under myself I tremble

The words "under myself" refer to what is below him. Possible meanings for the idiom are 1) "my legs tremble" or 2) "I tremble where I stand."