'Alone' in the Bible

But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.

And when he had sent the multitudes away, he went up into a mountain apart to pray: and when the evening was come, he was there alone.

Let them alone: they be blind leaders of the blind. And if the blind lead the blind, both shall fall into the ditch.

Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.