So Abraham prayed unto God: and God healed Abimelech, and his wife, and his maidservants; and they bare children.
"Now therefore, restore the man's wife, for he is a prophet, and he will pray for you and you will live. But if you do not restore [her], know that you shall surely die, you and all who are yours."
Now the LORD saw that Leah was unloved, and He opened her womb, but Rachel was barren.
1 Samuel 5:11
They sent therefore and gathered all the lords of the Philistines and said, "Send away the ark of the God of Israel, and let it return to its own place, so that it will not kill us and our people." For there was a deadly confusion throughout the city; the hand of God was very heavy there.
1 Samuel 5:12
And the men who did not die were smitten with tumors and the cry of the city went up to heaven.
that they may offer acceptable sacrifices to the God of heaven and pray for the life of the king and his sons.
So Eliphaz the Temanite and Bildad the Shuhite [and] Zophar the Naamathite went and did as the LORD told them; and the LORD accepted Job.
The LORD restored the fortunes of Job when he prayed for his friends, and the LORD increased all that Job had twofold.
The sacrifice of the wicked is an abomination to the LORD, But the prayer of the upright is His delight.
The LORD is far from the wicked, But He hears the prayer of the righteous.
Thus says the LORD, the Holy One of Israel, and his Maker: "Ask Me about the things to come concerning My sons, And you shall commit to Me the work of My hands.
"Ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you.
"And all things you ask in prayer, believing, you will receive."
"And likewise, all the prophets who have spoken, from Samuel and [his] successors onward, also announced these days.
Be anxious for nothing, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.
Therefore, confess your sins to one another, and pray for one another so that you may be healed. The effective prayer of a righteous man can accomplish much.