English: “For you know how we dwelt in the land of Egypt and how we passed through the midst of the nations” — not hearsay, but knowledge of the eye; you have seen their abominations.
In context: The covenant warning against idolatry is grounded in the people’s own lived exposure. They have already observed the practices of Egypt and of the nations along the route; the danger is concrete, not abstract.
Type of Learning
Custom (historical reminder that grounds the warning in firsthand experience).
What Is Learned
Awareness of past exposure to foreign worship strengthens the force of the covenant warning that follows.