Isa 6:10 Make the heart of this people fat, and make their ears heavy, and shut their eyes; lest they see with their eyes, and hear with their ears, and understand with their hearts, and turn back, and be healed.
What does FAT HEARTS speak of to you?
It seems that they had just been self indulging and were very lazy and corrupt.
God is saying that their hearts were sluggish, their ears were deaf and their eyes were blind to the real truth of their situation. So many today do not realise how acute their situation has become. Their circumstances have become DIRE, but they well not change and listen and see what they need to do.
God is saying to Isaiah, “Go proclaim to this people such a truth that will irritate, shock, provoke and enrage them. These fat self-indulgent hearts filled with corrupting infuences will only be irritated and enraged by the TRUTH.
GO PROCLAIM TO THIS PEOPLE EVEN THOUGH THEY WILL NOT HEART, THEY JUST BECOME MORE HARDENED. BUT STILL PROCLAIM DESPITE THE DIRE CONSEQUENCES WARNING THEM OF WHAT IS ABOUT TO HAPPEN.