1 Samuel 7:8
And the people of Israel said to Samuel, "Do not cease to cry out to the LORD our God for us, that he may save us from the hand of the Philistines."
Isaiah 37:4
It may be that the LORD your God will hear the words of the Rabshakeh, whom his master the king of Assyria has sent to mock the living God, and will rebuke the words that the LORD your God has heard; therefore lift up your prayer for the remnant that is left.'"
1 Samuel 12:19-24
And all the people said to Samuel, "Pray for your servants to the LORD your God, that we may not die, for we have added to all our sins this evil, to ask for ourselves a king."
Isaiah 62:1
For Zion's sake I will not keep silent, and for Jerusalem's sake I will not be quiet, until her righteousness goes forth as brightness, and her salvation as a burning torch.
Isaiah 62:6-7
On your walls, O Jerusalem, I have set watchmen; all the day and all the night they shall never be silent. You who put the LORD in remembrance, take no rest,
James 5:16
Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working.