1 John 5:16

If any one see his brother sin a sin not unto death, he shall ask, and shall give him life,to those who sin not unto death. There is a sin unto death; for that I do not say that he shall pray.

Acts 8:24

And Simon answering said, Pray ye to the Lord for me, that none of the things which ye have spoken may come upon me.

James 5:15

And the prayer of faith will save the sick, and the Lord will raise him up; even if he have committed sins, it shall be forgiven him.

Treasury of Scripture Knowledge

Summary

And all the people said unto Samuel, Pray for thy servants unto the LORD thy God, that we die not: for we have added unto all our sins this evil, to ask us a king.

Bible References

Pray for thy

Acts 8:24
And Simon answering said, Pray ye to the Lord for me, that none of the things which ye have spoken may come upon me.
James 5:15
And the prayer of faith will save the sick, and the Lord will raise him up; even if he have committed sins, it shall be forgiven him.
1 John 5:16
If any one see his brother sin a sin not unto death, he shall ask, and shall give him life,to those who sin not unto death. There is a sin unto death; for that I do not say that he shall pray.