Genesis 20:7

7Now then, return the man’s wife, afor he is a prophet, so that he will pray for you, and you shall live. But if you do not return her, know that you shall surely die, you band all who are yours.”

Genesis 20:17

17Then cAbraham prayed to God, and God healed Abimelech, and also healed his wife and female slaves so that they bore children.

Job 42:8-9

8Now therefore take dseven bulls and seven rams and go to my servant Job and eoffer up a burnt offering for yourselves. And my servant Job shall fpray for you, for I will accept his prayer not to deal with you according to your folly. For you have not spoken of me what is right, as my servant Job has.” 9 gSo Eliphaz the Temanite and Bildad the Shuhite and Zophar the Naamathite went and did what the Lord had told them, and the Lord accepted Job’s prayer.

James 5:15-16

15And the prayer of faith will save the one who is sick, and the Lord will raise him up. And hif he has committed sins, he will be forgiven. 16Therefore, iconfess your sins to one another and pray for one another, jthat you may be healed. kThe prayer of a righteous person has great power as it is working.
Or The effective prayer of a righteous person has great power

1 John 5:16

16If anyone sees his brother committing a sin not leading to death, he shall ask, and mGod
Greek he
will give him life—to those who commit sins that do not lead to death. oThere is sin that leads to death; pI do not say that one should pray for that.
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