We live in a day of weakness. Our society is characterized by yielding- giving in to the desires of the flesh and the mind, no matter how base and depraved these desires may be. Yet the Bible urges God’s people not only to fight the battle against our fleshly desires, but to win this battle, and consistently win these battles. Thus, the Scripture speaks much of spiritual strength: Act 9:22 But Saul increased the more in strength, and confounded the Jews which dwelt at Damascus, proving that this is very Christ. Rom 4:20 He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God; Php 4:13 I can do all things through Christ which strengtheneth me. In our text today, we see perhaps the most direct approach to spiritual strength in the Scriptures. Paul points out the necessity and possibility of spiritual strength, and explains to the believer how he may practically obtain it. Today we will examine the first part of this text: the necessity of spiritual strength, in consideration of the reality and cunning of our spiritual enemy. Some things in the sermon today may be difficult to hear. Ask the Holy Spirit for grace and patience to consider, understand, and apply the word of God.