Trust is not a passive state of mind. It is a vigorous act of the soul by which we choose to lay hold on the promises of God and cling to them despite the adversity that at times seeks to overwhelms us.
In order to trust God, we must always view our adverse circumstances through the eyes of faith, not of sense. And just as the faith of salvation comes through hearing the message of the gospel (Romans 10:17), so the faith to trust God in adversity comes through the Word of God alone. It is only in the Scriptures that we find an adequate view of God's relationship to and involvement in our painful circumstances. It is only from the Scriptures, applied to our hearts by the Holy Spirit, that we receive the grace to trust God in adversity.
I realize anew that, just as we must learn to obey God one choice at a time, we must also learn to trust God one circumstance at a time. Trusting God is not a matter of my feelings but of my will. I never feel like trusting God when adversity strikes, but I can choose to do so even when I don’t feel like it. That act of the will, though, must be based on belief, and belief must be based on truth.
To derive the fullest comfort and encouragement from Romans 8:28 we must realize that God is at work in a proactive, not reactive, fashion. That is, God does not just respond to an adversity in our lives to make the best of a bad situation. He knows before He initiates or permits the adversity exactly how He will use it for our good.
God in His infinite wisdom knows exactly what adversity we need to grow more and more into the likeness of His Son. He not only knows what we need but when we need it and how best to bring it to pass in out lives. He is the perfect teacher or coach. His discipline is always exactly suited for our needs. He never overtrains by allowing too much adversity into our lives.
If we are going to learn to trust God in adversity, we must believe God will allow nothing to subvert His glory so He will allow nothing to spoil the good He is working out in us and for us.