HEBREWS;3;15-; While it is said, Today if ye will hear his voice, harden not your hearts, as in the provocation................He whisper at man with that small still voice by way of the Holy Spirit. You ever hear somebody call your name to get your attention, but no man can be seen, then he is calling you to repentance. You won't hear him with your human ears,even though it will sound like it, but it will be from within your soul, and you will know.