"The Key That Is Forgotten" is a powerful sermon drawn from Revelation 3:7–13, centered on the divine authority of Jesus Christ as the One who holds the Key of David. This message explores the meaning and implications of that key—how it grants access, shuts out harm, and secures our eternal destiny. Through vivid illustration and rich Scripture, it reminds us that spiritual doors are not opened by effort but by Christ alone. The sermon challenges believers to trust God's timing, remember His presence, cling to His promises, and live with eternity in view. It's not about what doors are open or closed—but who holds the key.