Did the prophets think God could only speak through them? Did they think the God was mute without them? On the contrary, the prophets recognised it was the Spirit of prophecy who enabled them to speak, and that God could speak through anyone or anything. Job was emphatic on this point:
But ask the animals, and they will teach you,or the birds in the sky, and they will tell you;or speak to the earth, and it will teach you,or let the fish in the sea inform you.Which of all these does not knowthat the hand of the Lord has done this?
Is it such a strange suggestion then, that God can still speak to us through the land?
Might we experience the stones crying out, even today?