We endure in order to inherit the blessings of heaven and because we are sure that the blessings of heaven are certainly ours. And I don't want you to mangle the Scriptures, or miss the precious encouragement of God in both kinds of texts. Let me illustrate these two kinds of Scripture and try to show how both are really intended to strengthen and sustain your hope and empower your endurance. You recall from last week how the new covenant promises were better than the old covenant because they are accompanied with the assurance of spiritual power to fulfill the covenant conditions. I will put my Spirit within you, and cause you to walk in my statutes and be careful to observe my commandments.
Endurance is a promised gift of the new covenant.
God WILL do it. God is faithful, by whom you were called into the fellowship of his Son. In other words, if God calls you into the fellowship of his Son, he will give you endurance to the end. The path from justification to glorification is a path of obedience. Endurance is a gift and guarantee of the new covenant sealed by the blood of Jesus for all who trust in him.