219. The meaning of the voice of Jehovah God, going alone in the garden, as an inner dictate that [the people of this generation] dreaded can be established from the symbolism of voice in the Word. The voice of Jehovah there is taken to mean the Word itself, teachings about faith, conscience (or an alertness to what is inside us), and every reproof of conscience. As a result, thunderbolts are called the voices of Jehovah. An instance appears in John:

The angel then shouted with a loud voice, like a lion roaring, and when he shouted, the seven thunders uttered their voices. (Revelation 10:3-4)

This stands for the fact that an outer and an inner voice were heard at that time. In the same author:

In the days of the seventh angel's voice, the mystery of God is to come to an end. (Revelation 10:7)

The meaning here is similar. In David:

Sing to God, make music to the Lord, who is riding on the ancient heavens of heavens. Watch: he will lift his voice, a voice of strength. (Psalms 68:32-33)

The ancient heavens of heavens stand for the wisdom of the earliest church; the voice, for revelation and for an inner call as well. In the same author:

Jehovah's voice is upon the waters; Jehovah's voice has power; Jehovah's voice has glory. Jehovah's voice is shattering cedars; Jehovah's voice is cutting down fiery flames. Jehovah's voice makes the wilderness tremble; Jehovah's voice sends the does into labor and strips the forests bare. (Psalms 29:3, 4, 5, 7, 8, 9)

In Isaiah:

Jehovah will make the perfection of his voice heard, since at Jehovah's voice Assyria will panic. (Isaiah 30:30-31)