Therefore do not cast away your confidence, which has great reward. For you have need of endurance, so that after you have done the will of God, you may receive the promise:
Hebrews 10:35-36 (NKJV)
As we maintain our confidence in the finished works of Jesus, we will receive the reward which is to see the promises of God come to pass in our lives. Endurance enables us to remain faithful to God’s will, which puts us in a position of receiving everything He has already made available to us in Christ.