Jesus described four key signs that would precede his return: global deception through false prophets and messiahs, worldwide turmoil including wars and natural disasters, global persecution of Christians, and personal betrayal even by family members. The purpose of these signs isn't to help us predict when Jesus will return, but to prepare us to live faithfully during difficult times. When we ignore Jesus' return, we lose three crucial elements: urgency about eternal matters, sobriety to see spiritual realities clearly, and hope during suffering. The second coming represents the completion of the gospel - not just forgiveness from sin's penalty, but complete removal of sin's presence.