“Did I not say to you that if you would believe you would see the glory of God?” John 11.40
Do you believe in God? Yes, I believe.
You have faith in God? Yes, I have.
Belief, or faith, in God, means belief, or faith, in His Word.
Do you believe in God's Word? Yes, I do.
Do you obey the Word of God? Hmmm, more or less...
If you obey more or less, then your faith, or your belief, in God is more or less. This is the reason why many who believe in Jesus do not see the glory of God.
Obedience to God's Word shows the kind of faith we have.