Why should Christians avoid fellowship with unfruitful works of darkness?

In Ephesians 5:11, Paul advises believers to have no fellowship with the unfruitful works of darkness, underscoring a crucial principle of Christian living. These works include anything that contradicts God's holiness, such as immorality and lies. Engaging with such activities not only risks spiritual deception but also hampers one's witness and fellowship with God. Instead, believers are called to reprove these works, standing firmly in the light and truth of Christ. This separation from darkness is vital for maintaining a life that honors God and reflects His glory to the world, as unfruitful behaviors are detrimental to spiritual growth and integrity.