1 Samuel 7:8
The Israelis told Samuel, "Don't stop crying out to the LORD our God for us that he may deliver us from the hand of the Philistines."
Isaiah 37:4
Perhaps the LORD your God will hear the words of the field commander, whom his master, the king of Assyria, sent to mock the living God, and perhaps he will rebuke the words that the LORD your God has heard. So lift up a prayer for the remnant that still survives in this city."
1 Samuel 12:19-24
Then all the people told Samuel, "Pray to the LORD your God for your servants, so that we don't die, because we made all our sins worse by asking for a king for ourselves."
Isaiah 62:1
"And I won't remain silent, and for Jerusalem's sake I won't stay quiet, until her vindication shines out like brightness, and her salvation like a burning torch.
Isaiah 62:6-7
"Upon your walls, Jerusalem, I have posted watchmen; all day and all night they won't remain silent. You who make mention of the LORD, take no rest,
James 5:16
Therefore, make it your habit to confess your sins to one another and to pray for one another, so that you may be healed. The prayer of a righteous person is powerful and effective.