'Supplications' in the Bible

And I set my face unto the Lord God, to seek by prayer and supplications, with fasting and sackcloth and ashes.

Now therefore, O our God, hearken unto the prayer of thy servant, and to his supplications, and cause thy face to shine upon thy sanctuary that is desolate, for the Lord's sake.

O my God, incline thine ear, and hear; open thine eyes, and behold our desolations, and the city which is called by thy name: for we do not present our supplications before thee for our righteousness, but for thy great mercies'sake.

At the beginning of thy supplications the commandment went forth, and I am come to tell thee; for thou art greatly beloved: therefore consider the matter, and understand the vision.