Genesis 20:17

Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much.

Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God.

So they sent and gathered together all the lords of the Philistines, and said, Send away the ark of the God of Israel, and let it go again to his own place, that it slay us not, and our people: for there was a deadly destruction throughout all the city; the hand of God was very heavy there. And the men that died not were smitten with the emerods: and the cry of the city went up to heaven.

Brethren, pray for us.

That they may offer sacrifices of sweet savours unto the God of heaven, and pray for the life of the king, and of his sons.

Now therefore restore the man his wife; for he is a prophet, and he shall pray for thee, and thou shalt live: and if thou restore her not, know thou that thou shalt surely die, thou, and all that are thine.

And when the Lord saw that Leah was hated, he opened her womb: but Rachel was barren.

Thus saith the Lord, the Holy One of Israel, and his Maker, Ask me of things to come concerning my sons, and concerning the work of my hands command ye me.

So Eliphaz the Temanite and Bildad the Shuhite and Zophar the Naamathite went, and did according as the Lord commanded them: the Lord also accepted Job. And the Lord turned the captivity of Job, when he prayed for his friends: also the Lord gave Job twice as much as he had before.

And all things, whatsoever ye shall ask in prayer, believing, ye shall receive.

Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:

The sacrifice of the wicked is an abomination to the Lord: but the prayer of the upright is his delight.

Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days.

The Lord is far from the wicked: but he heareth the prayer of the righteous.