What does the Bible say about eternal things?

In 2 Corinthians 4:17-18, Paul contrasts the temporary afflictions we face with the eternal weight of glory that is ours in Christ. He explains that while we may be burdened by life's difficulties, they are light and momentary compared to the eternal joy that awaits us. This focus on eternal things encourages believers to seek the things that are unseen, which are lasting and filled with hope. As believers, we are called to think on things that are true and pure, which are rooted in God's eternal truths and promises.