Luke 1:37 For with God nothing will be impossible.
The words of the angel must have shaken Mary as she listened to what was to come. I believe these words sunk deep and stuck in her heart.
When we read about Mary later in the bible we find that she has no problem believing God and trusting that He is able to do anything.
We all have our doubts at times and then we must remember these words spoken to Mary “with God nothing is impossible”.
God is God of heaven and earth, God of all creation and God of all time; trust Him who is faithful!