I've heard of Zac Poonon from Sermonindex discussion boards. I've heard listened to a sermon since this week. I must say his preaching has been such a blessing to me! His style of teaching feels so spirit lead and humble. I've been going through some battles this week and the sermons that I listened have been such a encouragement and refreshing. I've listened to his series on Brokeness and changing our way of thinking...if you haven't listened to then...would encourage that you make time to listen to them!
