How do we know that Christ's second coming will be unexpected?

Christ's second coming will be a time of surprise, a truth highlighted in Matthew 25:6, which notes the midnight cry heralding His arrival. This theme of unexpectedness serves as a warning that people will be preoccupied with earthly concerns—business, politics, and daily activities—neglecting their spiritual state. As indicated in this parable, many will find themselves unprepared when Jesus returns, leading to spiritual consequences that cannot be reversed. It is crucial, therefore, for believers to live in continual readiness, aware that Christ may come at any moment.