God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
[God] is at work in all the circumstances of your life to bring out the good for you, even if you had never heard of Romans 8:28. His work is not dependent upon your faith. But the comfort and joy that statement is intended to give you is dependent upon your believing it, upon your trusting in Him who is at work, even though you cannot see the outcome of that work.
The Bible contains the words of God and has great power. It is the primary tool that God uses to provide divine guidance and insight, convict sinners, change hearts, judge thoughts and attitudes, and train and equip Christians.