Biblical Reference:
The encounter with the Commander of the LORD's Army is recorded in the Book of Joshua, specifically in Joshua 5:13-15. This event occurs as the Israelites, under Joshua's leadership, are preparing to conquer the city of Jericho.

Context and Background:
After the Israelites crossed the Jordan River into the Promised Land, they camped at Gilgal. Here, they observed the Passover and the manna ceased as they began to eat the produce of the land (Joshua 5:10-12). This marked a significant transition from their wilderness wanderings to the conquest of Canaan.

The Encounter:
Joshua 5:13-15 describes the encounter:
"Now when Joshua was near Jericho, he looked up and saw a man standing in front of him with a drawn sword in his hand. Joshua approached him and asked, 'Are you for us or for our enemies?' 'Neither,' he replied. 'I have now come as commander of the LORD’s army.' Then Joshua fell facedown in reverence and asked him, 'What does my Lord have to say to His servant?' The commander of the LORD’s army replied, 'Take off your sandals, for the place where you are standing is holy.' And Joshua did so."

Theological Significance:
This encounter is significant for several reasons. Firstly, it underscores the divine nature of Israel's mission in Canaan. The presence of the Commander of the LORD's Army indicates that the battles ahead are not merely physical but spiritual, with God Himself leading the charge.

The identity of the Commander has been a subject of theological discussion. Many conservative scholars view this figure as a theophany, a pre-incarnate appearance of Christ. This interpretation is supported by the command to remove sandals, reminiscent of Moses' encounter with God at the burning bush (Exodus 3:5), indicating the presence of the divine.

Symbolism and Imagery:
The drawn sword symbolizes readiness for battle and divine authority. The response "Neither" to Joshua's question highlights that God's purposes transcend human alliances and conflicts. The holiness of the ground signifies the sanctity of God's presence and the need for reverence and obedience.

Implications for Joshua and Israel:
This encounter reassures Joshua of God's presence and guidance as he leads Israel into battle. It serves as a reminder that victory depends not on military might but on divine support and obedience to God's commands. Joshua's response of worship and submission sets a precedent for Israel's reliance on God throughout the conquest of Canaan.

Lessons for Believers:
For contemporary believers, this passage emphasizes the importance of recognizing God's sovereignty in all endeavors. It calls for a posture of worship, reverence, and obedience, acknowledging that true success comes from aligning with God's will and purposes.