'Prayers' in the Bible

Is anyone among you in trouble? let him say prayers. Is anyone glad? let him make a song of praise.

Is anyone among you ill? let him send for the rulers of the church; and let them say prayers over him, putting oil on him in the name of the Lord.

So then, make a statement of your sins to one another, and say prayers for one another so that you may be made well. The prayer of a good man is full of power in its working.