'Pray for' in the Bible

If a man sin against a man, then hath God judged him; but if against Jehovah a man sin, who doth pray for him?' and they hearken not to the voice of their father, though Jehovah hath delighted to put them to death.

And Samuel said, Gather all Israel to Mizpeh, and I will pray for you unto the LORD.

And all the people said unto Samuel, Pray for thy servants unto the LORD thy God, that we die not: for we have added unto all our sins this evil, to ask us a king.

Moreover as for me, God forbid that I should sin against the LORD in ceasing to pray for you: but I will teach you the good and the right way: