What does the Bible say about assurance of resurrection?

In Scripture, particularly in Philippians 3:11 and 1 Corinthians 15:35-58, the Apostle Paul emphasizes that our assurance of resurrection comes from being found in Christ, not relying on our own righteousness. He speaks of the necessity to reckon all things as loss for the surpassing worth of knowing Christ. As believers, we are to have confidence that through Christ's work, we will be raised incorruptible. This assurance is vital for Christians as it connects our present faith with our future hope of a glorious resurrection.