My word shall not pass away, but shall all be fulfilled, whether by mine own voice or by the voice of my servants, it is the same.
I always read that to say that it did not matter if God fulfilled his words directly, or through his servants, it was the same.
The first time I really thought about it was when a friend complained about how he had been in need and God had let him down. No matter how much he prayed and trusted and exercised faith, he received no relief, just calls from his bishop, butting in. He saw absolutely not relationship between his cries for help and the fact that the bishop kept calling up and asking him if he could help. My friend would say no, and then go back to praying to God for help.
I told him the old story about the guy who hears from God that he will be rescued from a flood, so he ignores the various rescue parties that come by. When he dies and is remonstrating with God, God says “but I sent a bus, a car, a boat and a helicopter, why didn’t you take one?”
How often do you think God tries to work through others? How often do you think God would work through us if we would let him?