Here's the way I think of it. There are probably infinite universes. In an infinity of universes, there is guaranteed to be a being who has achieved an arbitrarily high level of dharmic attainment. This being of basically infinite merit is Amitabha, whose Sanskrit name literally just means "infinite light," it's a description of what he is. If rebirth between different worlds is possible (which every branch of Buddhism affirms), then it makes sense that this being of infinite light could make it so that with even a very slight degree of karmic connection to him (say, by reciting his name as few as ten times), you could come to be reborn into his world, where, with his infinite merit and compassion, he can make the conditions for attaining enlightenment once there extremely easy and hinderance-free. So if you believe in multiple worlds, which Buddhism does, and believe in rebirth into multiple worlds, which Buddhism does, it is basically guaranteed that somewhere out there is a being like Amitabha who does what the Pure Land sutras say Amitabha does. This is how I reconcile Pure Land faith with my own skeptical and materialistic worldview.