'Pray for' in the Bible

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

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

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