'Trembled' in the Bible

Then Isaac {trembled violently}. Then he said, "Who then [was] he that hunted wild game and brought [it] to me, and I ate [it] all before you came, and I blessed him? Moreover, he will be blessed!"

And he said to his brothers, "My money was returned and moreover, behold, [it is] in my sack!" Then {their hearts failed them} and each of them trembled [and] said, "What [is] this God has done to us?"