'Terrible' in the Bible

He said to me, ‘Stand up facing me and kill me, for [terrible] agony has come over me, yet I still live [and I will be taken alive].’

And what one nation in the earth is like thy people, even like Israel, whom God went to redeem for a people to himself, and to make him a name, and to do for you great things and terrible, for thy land, before thy people, which thou redeemedst to thee from Egypt, from the nations and their gods?