Notice the prepositions: by, through, and with. The Book of Ephesians uses all three to describe what is involved with our salvation. It teaches we are saved by grace. It teaches we are saved through faith. It teaches we are saved with the washing of water by the word. It is not grace alone, else faith and washing of water would not be required. It is not faith alone, else grace and washing of water would not be involved. It is not by washing of water alone, else grace and faith would not be involved. But, it is all three involved together.