'Ground' in the Bible

And the Lord said to him, 'Untie the sandals from your feet, for the place on which you are standing is holy ground.

And falling to the ground, he heard a voice saying to him, "Saul, Saul, why are you persecuting me?"

So Saul got up from the ground, but [although] his eyes were open he could see nothing. And leading him by the hand, they brought [him] into Damascus.

and I fell to the ground and heard a voice saying to me, 'Saul, Saul, why are you persecuting me?'

And [when] we had all fallen to the ground, I heard a voice saying to me in the Aramaic language, 'Saul, Saul, why are you persecuting me? [It is] hard for you to kick against the goads!'