Definition and Concept:
The concept of "Peace through Strength" is the idea that a nation or community can ensure peace by maintaining a strong military or defense capability. This principle suggests that potential aggressors are deterred from conflict when they perceive a strong and capable opposition. While the phrase itself is not directly found in the Bible, the underlying principle can be seen in various scriptural passages that emphasize the importance of strength, preparedness, and reliance on God for peace and security.

Biblical Foundations:
The Bible often speaks of strength and peace, both in a physical and spiritual sense. In the Old Testament, the Israelites were frequently called to be strong and courageous, especially when facing adversaries. For instance, in Joshua 1:9 , God commands Joshua, "Have I not commanded you to be strong and courageous? Do not be afraid; do not be discouraged, for the LORD your God will be with you wherever you go." This verse highlights the importance of strength and courage, underpinned by faith in God's presence, as a means to achieve peace and success.

Divine Strength and Protection:
The Psalms frequently reflect on God as a source of strength and protection, which leads to peace. Psalm 29:11 states, "The LORD gives strength to His people; the LORD blesses His people with peace." Here, strength and peace are directly linked, with God as the provider of both. This suggests that true peace is found not merely in human might but in divine empowerment and blessing.

Preparedness and Defense:
The Bible also acknowledges the necessity of preparedness and defense. Nehemiah, when rebuilding the walls of Jerusalem, exemplified this principle by arming the workers to protect against potential threats (Nehemiah 4:17-18). This practical approach to security underscores the idea that being prepared and strong can prevent conflict and ensure peace.

Spiritual Warfare:
In the New Testament, the concept of strength is often applied to spiritual warfare. Ephesians 6:10-11 exhorts believers, "Finally, be strong in the Lord and in His mighty power. Put on the full armor of God, so that you can make your stand against the devil’s schemes." This passage emphasizes that spiritual strength and the armor of God are essential for standing firm against evil, thus maintaining peace in the believer's life.

Jesus Christ, the Prince of Peace:
While strength is important, the ultimate source of peace in the Christian faith is Jesus Christ, referred to as the "Prince of Peace" in Isaiah 9:6 . His life and teachings emphasize peace through reconciliation with God and others. In John 14:27 , Jesus assures His followers, "Peace I leave with you; My peace I give to you. I do not give to you as the world gives. Do not let your hearts be troubled; do not be afraid." This peace transcends human understanding and is rooted in a relationship with Christ.

Conclusion:
The biblical perspective on "Peace through Strength" encompasses both physical and spiritual dimensions. While human strength and preparedness are important, true peace is ultimately found in reliance on God's strength and the peace offered through Jesus Christ. The Bible encourages believers to be strong and courageous, to trust in God's protection, and to seek peace through a life aligned with His will.