Deuteronomy 7:20 (KJV) reads: "Moreover the Lord thy God will send the hornet among them, until they that are left, and hide themselves from thee, be destroyed."

In order to fully understand the significance of this verse, it is important to consider the broader context of the book of Deuteronomy and the historical circumstances of the Israelites at the time. Deuteronomy is the fifth book of the Hebrew Bible and is part of the Torah, or the first five books of the Old Testament. It is traditionally attributed to Moses and is set in the form of a series of speeches given by Moses to the Israelites as they prepare to enter the Promised Land. The book of Deuteronomy serves as a reminder of the covenant between God and the Israelites and provides them with instructions and laws to follow as they settle in the land.

In the verse itself, the Israelites are being reassured that the Lord will go before them and aid in their conquest of the land. The use of the image of the hornet as a means of divine intervention is significant. The hornet, a small and seemingly insignificant creature, represents a supernatural and powerful force that will be employed by God to assist the Israelites in their battles. This serves as a powerful reminder of God's sovereignty and his ability to use any means at his disposal to fulfill his promises to his people.

The mention of "they that are left, and hide themselves from thee, be destroyed" serves as a warning to the enemies of the Israelites. It emphasizes the fact that there will be no escape from the judgment and justice of God. This echoes the broader theme of divine justice and retribution that runs through the Old Testament, emphasizing the consequences of disobedience and the inevitability of divine judgment.

In a broader sense, this verse can also be viewed as a reflection of the larger biblical theme of God as a warrior on behalf of his people. Throughout the Old Testament, God is often depicted as a mighty warrior who fights on behalf of the Israelites and delivers them from their enemies. This imagery is used to convey the idea that the ultimate victory of the Israelites is not due to their own strength or abilities, but rather, it is God who fights on their behalf and secures their triumph.

Additionally, the use of the hornet as a form of divine intervention can also be seen as symbolic of God's ability to use seemingly small or insignificant things to achieve his purposes. This serves as a reminder of the mysterious and transcendent nature of God's power, and the ways in which he works in the world through means that are beyond human understanding.

Overall, Deuteronomy 7:20 serves as a powerful reminder of the sovereignty and power of God, as well as the assurance of his presence and assistance in the lives of his people. It also emphasizes the themes of divine justice and retribution, as well as the use of symbolic imagery to convey deeper spiritual truths. This verse offers a poignant reflection on the nature of God's intervention in the world and serves as a source of comfort and reassurance for believers.