'Understand' in the Bible

and he was supposing his brethren to understand that God through his hand doth give salvation; and they did not understand.

saying, Go on unto this people and say, With hearing ye shall hear, and ye shall not understand, and seeing ye shall see, and ye shall not perceive,

for made gross was the heart of this people, and with the ears they heard heavily, and their eyes they did close, lest they may see with the eyes, and with the heart may understand, and be turned back, and I may heal them.