'Cannot' in the Bible

and turn ye not aside; for then would ye go after vain things which cannot profit nor deliver, for they are vain.

And David girded his sword upon his apparel, and he assayed to go; for he had not proved it. And David said unto Saul, I cannot go with these; for I have not proved them. And David put them off him.

And when Saul saw David go forth against the Philistine, he said unto Abner, the captain of the host, Abner, whose son is this youth? And Abner said, As thy soul liveth, O king, I cannot tell.

Now therefore know and consider what thou wilt do; for evil is determined against our master, and against all his house: for he is such a worthless fellow, that one cannot speak to him.