'Prayer' in the Bible

“So when you spread out your hands [in prayer, pleading for My help],I will hide My eyes from you;Yes, even though you offer many prayers,I will not be listening.Your hands are full of blood!

It may be that the Lord your God will hear the words of the Rabshakeh [the commander], whom his master the king of Assyria has sent to taunt and defy the living God, and will avenge the words which the Lord your God has heard. Therefore, offer a prayer for the remnant [of His people] that is left.’”

“Go and say to Hezekiah, ‘For the Lord, the God of David your father says this, “I have heard your prayer, I have seen your tears; listen carefully, I will add fifteen years to your life.

All these I will bring to My holy mountainAnd make them joyful in My house of prayer.Their burnt offerings and their sacrifices will be accepted on My altar;For My house will be called a house of prayer for all the peoples.”