'Unable' in the Bible

lo, I pray thee, thy servant hath found grace in thine eyes, and thou dost make great thy kindness which thou hast done with me by saving my life, and I am unable to escape to the mountain, lest the evil cleave to me, and I have died;

And they place for him by himself, and for them by themselves, and for the Egyptians who are eating with him by themselves: for the Egyptians are unable to eat bread with the Hebrews, for it is an abomination to the Egyptians.

And the eyes of Israel have been heavy from age, he is unable to see; and he bringeth them nigh unto him, and he kisseth them, and cleaveth to them;

And Moses saith unto Jehovah, 'The people is unable to come up unto mount Sinai, for Thou -- Thou hast protested to us, saying, Make a border for the mount, then thou hast sanctified it.'

He saith also, 'Thou art unable to see My face, for man doth not see Me, and live;'