Ether 12:11-12 [BOM]
“11Wherefore, by faith was the law of Moses given. But in the gift of his Son hath God prepared a more excellent way; and it is by faith that it hath been fulfilled.
12For if there be no faith among the children of men God can do no miracle among them; wherefore, he showed not himself until after their faith.”
I rarely even know where to start in all this. But I’m in the home stretch now. Almost done with Ether, then only the short book of Moroni. I’ll be glad to be finished with this leg of the project.
But what I’m led to believe here is God needs our faith to do miracles. One might read portions of Matthew in such a manner. Say perhaps the 13th chapter of Matthew:
“And when Jesus had finished these parables, he went away from there,  and coming to his hometown he taught them in their synagogue, so that they were astonished, and said, "Where did this man get this wisdom and these mighty works?  Is not this the carpenter's son? Is not his mother called Mary? And are not his brothers James and Joseph and Simon and Judas?  And are not all his sisters with us? Where then did this man get all these things?"  And they took offense at him. But Jesus said to them, "A prophet is not without honor except in his hometown and in his own household."  And he did not do many mighty works there, because of their unbelief.” (Matthew 13:53-58 (ESV)
But it is obvious from the text that he did do mighty works among them, just not many. This was judgment, not inability. Time after time Jesus does miracles despite faith or lack of it. He does reward faith often with a Miracle. But his first miracle, that of making wine, was not done for any great faith. The Miracle of the incarnation, the resurrection, the list could go on of miracles done despite the lack of faith. Some of these miracles even have the effect of creating faith. Faith is the fruit of the miracle, much more than miracle is a fruit of faith.