Here "fringes" represents a small part that we can see of something that is much bigger. Alternate translation: "See, these things that God has done show only a small part of his great power" (See: [[rc://en/ta/man/jit/figs-metaphor]])
This is an exclamation that expresses Job's amazement of all the great things that God does that we do not even know about. Seeing what God does is spoken of as hearing God's voice. Alternate translation: "it is as if we heard only his quiet whisper!" (See: [[rc://en/ta/man/jit/figs-exclamations]] and [[rc://en/ta/man/jit/figs-metaphor]])
The "thunder of his power" represents God's greatness. Job uses this question to emphasize that God's power is so great that no one can understand it. Alternate translation: "The thunder displays the greatness of his power which no one can understand!" (See: [[rc://en/ta/man/jit/figs-rquestion]] and [[rc://en/ta/man/jit/figs-metaphor]])