What is impossible with men is possible with God. (Luke 18:27)
Is anything impossible for the Lord? (Genesis 18:14)
Since I have experienced this (very) often, it is in first place here.
He answered them: Because of your small faith! For verily I say to you:
If you have faith like a mustard seed and command this mountain,
"Move from here to there," it will move, and nothing will be impossible for you. (Matthew 17:20)
For your faith should not be based on human wisdom,
but on God's power (or: be founded). (1 Corinthians 2:5)
If I have spoken to you about earthly things and you don't believe:
how will you believe when I speak to you about heavenly things? (John 3:12)
Since I experience daily what is impossible through small faith and what is possible through great faith, this is the second place here.
If you call me, I will answer you and tell you great and incredible (or: secret) things
you have not known about before. (Jeremiah 33:3)
What no eye has seen or no ear heard and what no human heart has had a clue of,
namely what God prepares for those who love him. (1 Corinthians 2:9)
Since I have often experienced such (small and big) miracles, it is in third place here.