David Forsyth examines James 4:4-10, addressing the church's worldliness issue. Overcoming spiritual adultery requires recognizing our predicament, receiving God's grace, and rectifying our situation through genuine repentance. Forsyth presents a three-part battle plan to combat worldliness, emphasizing the need for humility and submission to God. The sermon challenges believers to examine their walk with Christ and take practical steps to resist worldly influences.