1."Have they not traveled in the land and have they hearts wherewith to feel and ears wherewith to hear."
2."Having hearts wherewith they understand not, and having eyes wherewith they see not."
3.“And their hearts are sealed, so that they apprehend not.”
4.“These are they into whose hearts He has impressed faith and strengthened them with a spirit from Him."
5."And whosoever believeth in God, He guideth his heart. And God is knower of all things."