Definition and Context:
Military success in the biblical context refers to the victories and triumphs achieved by individuals or nations in warfare, often attributed to divine intervention or favor. Throughout the Bible, military success is frequently depicted as a result of obedience to God, faith, and divine strategy rather than mere human strength or numbers.

Old Testament Examples:

1. Joshua and the Conquest of Canaan:
Joshua is a prominent figure associated with military success. After Moses' death, Joshua led the Israelites into the Promised Land. His victories, such as the fall of Jericho, are attributed to his obedience to God's commands. The Lord instructed Joshua, "See, I have delivered Jericho into your hands, along with its king and its fighting men" (Joshua 6:2). The miraculous collapse of Jericho's walls after the Israelites marched around them for seven days exemplifies divine intervention in military success.

2. Gideon and the Midianites:
Gideon's victory over the Midianites is another example of military success achieved through faith and divine guidance. Despite having a significantly smaller army, Gideon triumphed because the Lord assured him, "With the three hundred men that lapped I will save you and give the Midianites into your hands" (Judges 7:7). This victory underscores the principle that success in battle is not dependent on numbers but on God's will.

3. David's Victories:
King David is renowned for his military prowess, which is consistently linked to his relationship with God. From his defeat of Goliath to his numerous campaigns against surrounding nations, David's success is portrayed as a result of his faith and reliance on God. In 1 Samuel 17:47, David declares, "And all those assembled here will know that it is not by sword or spear that the LORD saves; for the battle is the LORD’s, and He will give all of you into our hands" .

New Testament Perspective:

While the New Testament does not focus on physical military success, it often uses military imagery to describe spiritual battles and victories. The Apostle Paul, for instance, speaks of the "armor of God" in Ephesians 6:10-18, encouraging believers to stand firm against spiritual adversaries. This passage highlights the importance of spiritual readiness and reliance on God's power for success in the Christian life.

Theological Implications:

1. Divine Sovereignty:
Military success in the Bible is often depicted as a manifestation of God's sovereignty and His ability to control the outcomes of battles. The victories of Israel serve as reminders of God's power and His covenant promises to His people.

2. Obedience and Faith:
A recurring theme in biblical accounts of military success is the necessity of obedience to God's commands and faith in His promises. Leaders like Joshua and Gideon exemplify how trust in God and adherence to His instructions lead to victory.

3. Moral and Ethical Conduct:
The Bible also emphasizes the importance of moral and ethical conduct in achieving military success. The Israelites were often reminded to remain faithful to God's laws and to avoid the practices of the nations they conquered.

Conclusion:
Military success in the Bible is intricately linked to divine intervention, faith, and obedience. It serves as a testament to God's power and faithfulness, providing lessons on the importance of spiritual readiness and reliance on God for victory in both physical and spiritual battles.