1 Samuel 7:8
The children of Israel said to Samuel, "Do not cease to cry to the LORD our God for us, that he will save us out of the hand of the Philistines."
Isaiah 37:4
It may be the LORD your God will hear the words of Rabshakeh, whom the king of Assyria his master has sent to defy the living God, and will rebuke the words which the LORD your God has heard. Therefore lift up your prayer for the remnant that is left.'"
1 Samuel 12:19-24
All the people said to Samuel, "Pray for your servants to the LORD your God, that we not die; for we have added to all our sins this evil, to ask us a king."
Isaiah 62:1
For Zion's sake I will not keep silent, and for Jerusalem's sake I will not rest, until her righteousness go forth as brightness, and her salvation as a lamp that burns.
Isaiah 62:6-7
I have set watchmen on your walls, Jerusalem; they shall never be silent, day or night. You who call on the LORD, 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 the righteous person is powerfully effective.