The congregation roared and shrieked and screamed while he controlled the din using his fist as a baton, raising the volume, lowering it, squeezing it down to a subvocal growl, then suddenly driving it to crescendo that shook the balcony.  Mike felt it beat on him and he wallowed in it, with ecstasy so painful that he feared that he would be forced to withdraw.  But Jill had told him that he must not ever do so again, except in the privacy of his own room; he controlled it and let the waves wash over him.