Shared ground
Deuteronomy 7:17–21 presents fear as an expected inner response (“in your heart”) when Israel sizes up nations that look stronger and more numerous (explicit). The passage’s answer is not to pretend the danger is unreal, but to reframe the situation by remembering Yahweh’s past deliverance from Egypt (explicit). The logic is spelled out: the same God who acted publicly and powerfully against Pharaoh can act again against the peoples Israel fears (explicit).
The text also grounds confidence in Yahweh’s presence “in the midst of you,” describing him as “great and awesome” (explicit). The focus is on who is with Israel and what he has already done, not on Israel’s strength (inference from the argument’s contrast between numbers and Yahweh’s action).
Where interpretation differs
What “the hornet” means (v. 20)
Some read “the hornet” as literal stinging insects sent by God to drive people out or destabilize them. Others read it as a figure of speech for panic, plague, or some other form of terror that makes resistance collapse. Both readings fit the verse’s function: Yahweh adds pressure that reaches even those who try to hide (explicit), but the exact mechanism is not explained.
Who “your eyes saw” refers to (v. 19)
Some take “your eyes saw” as speaking mainly to people who personally witnessed the exodus events. Others think Moses is also speaking in a corporate, story-shaped way, where later hearers can be addressed as participants because the community’s shared memory is treated as their own. The passage itself leans on a remembered, retold public history, but it does not directly clarify how that memory is held by later generations.
Why the disagreement exists
The passage uses vivid images and communal language (“your eyes saw”) while giving few concrete details about the “hornet.” That combination invites different judgments about how literal the wording is meant to be and how Moses’ speech relates to a newer generation hearing about earlier events.
What this passage clearly contributes
The text explicitly ties courage to historical memory: Israel’s future hope is anchored in Yahweh’s past acts against Egypt, described as trials, signs, wonders, and rescuing power (vv. 18–19). It also presents Yahweh as actively involved in the coming conflict, not only through direct confrontation but through ongoing pressure that reaches survivors in hiding (v. 20). Finally, it grounds fearlessness in Yahweh’s presence among his people (v. 21), making divine nearness a central reason the numerical advantage of enemies is not decisive (v. 17).