Ephesians 1:3-14 is beautiful. It contains some many truths about God and the salvation He has given us. In this passage comes one of the most confusing doctrines in all of scripture and that is predestination. Has God chosen us based on our efforts, our future faith, or by His grace.
J.D. Greear addresses these things and more in this sermon:
Two episodes from Doctrine and Devotion:
Perseverance of the Saints
One Misunderstanding on Predestination
Chosen for Life: The Case for Divine Election by Sam Storms
Chosen By God by R.C. Sproul
The Reformed Doctrine of Predestination by Loraine Boettner