And so because of their breaking their pledge, and their intentional ignoring of God’s signs (in the universe and in themselves) and their rejection of His Revelations, and their killing certain Prophets against all right, and their saying, "Our hearts have become callous (no longer having any ability to believe)." No! Rather, God has set a seal on their hearts because of their persistent unbelief, so that, with the exception of few, scarcely do they believe.