'Man' in the Bible

and one in a certain place did testify fully, saying, 'What is man, that Thou art mindful of him, or a son of man, that Thou dost look after him?

of the holy places a servant, and of the true tabernacle, which the Lord did set up, and not man,

so that we do boldly say, 'The Lord is to me a helper, and I will not fear what man shall do to me.'