'Mortal' in the Bible

‘Can [mortal] man be just before God or be more righteous than He?Can a man be pure before his Maker or be more cleansed than He?

“Yes, I know it is true.But how can a mortal man be right before God?

“Behold, I will not make you afraid or terrified of me [for I am only mortal and not God],Nor should any pressure from me weigh heavily upon you.

“Son of man, say to the prince of Tyre, ‘Thus says the Lord God,“Because your heart is lifted upAnd you have said and thought, ‘I am a god,I sit in the seat of the godsIn the heart of the seas’;Yet you are [only] a man [weak, feeble, made of earth] and not God,Though you [imagine yourself to be more than mortal and] think your mind is as [wise as] the mind of God—