These words of Jesus were addressed to a beautiful woman
Jesus said to him: Did I not tell you that if you believe, you will see the glory of God?
To whom did Jesus say "I have not told you that if you believe" ...? He told Martha. The logical and natural circumstances of life told Martha that everything was lost. His brother had died. There was no hope. But Jesus reminded him that they had talked about this before.
Like you, God has already spoken to you, and God speaks to you today and says:
Mark 9:23 Anyone who believes, everything is possible.
If He has already told you before, you do not have to fear today. The circumstances of before are as dark as those of today, but God also remains the same, yesterday, today, and forever, and the God who saved you today will save you tomorrow, just as He saved you yesterday.