So whoever God wants to guide he expands his chest to; and whoever he wants to misguide, he makes his chest tight and constructed as though he were climbing in to the sky. Thus does God place defilement upon those who do not believe " why is it" tight and constricted as though he was climbing in to the sky??... What is in the sky?? All praise due to God, who revealed his signs, therefore the people saw with the knowledge of certainly, subsidence of air pressure continuously the higher we move away from the earth surface, and that if anybody climbs the sky he will constrict his breathing, due to the pressure applied by chest muscles which is found between abdomen and chest on both lungs resulting in severe respiratory discomfort (dyspnea). Verily he is God the glorified, the one who revealed the knowledge, and guides his servants to his honored promise: we will show them our signs in the horizons and within themselves until it becomes clear to them that it's the truth.