What does Judges 13:6 mean?
The "angel of the LORD," Yahweh Himself in human form, has appeared to a barren woman. His good news to her is that she will have a son (Judges 13:2–5). This child will be special and is to be set apart, even before birth, as a Nazarite (Numbers 6:1–21). He is destined to begin to save Israel from the Philistines (Judges 13:1). This baby would grow to become Israel's next deliverer (Judges 2:16).Once the "angel of the LORD" leaves, Manoah's wife rushes to tell her husband what has happened. She doesn't yet understand exactly who has been talking to her. She describes the visitor as a man who looked like an angel. She uses a Hebrew root word translated as "awesome." In modern English, this has become a generic, positive description. However, both the Hebrew and English words are meant to refer to something that inspires "awe:" a reverent, astonished, even fearful response. What the woman saw was simultaneously beautiful and intimidating.
As she's talking, she seems to realize how little she knows about the messenger. They did not discuss names or personal details. She reports the wonderful, startling things she was told in the following verse (Judges 13:7).
Manoah's wife gives a description consistent with other biblical appearances of "the angel of the LORD." This is likely not a common angel, in the proper sense. The figure is so closely associated with Yahweh—the One True God—that He is often referred to both as "the angel of the LORD" as well as simply "the LORD" (Judges 6:12–14). This is often called a "theophany:" God in a tangible, temporary form which is both human and awesomely divine.