Verses with the word praying in the Old Testament (6 verses):

1 Samuel 1:12
And it came to pass, as she continued praying before the LORD, that Eli marked her mouth.

1 Samuel 1:26
And she said, Oh my lord, as thy soul liveth, my lord, I am the woman that stood by thee here, praying unto the LORD.

1 Kings 8:54
And it was so, that when Solomon had made an end of praying all this prayer and supplication unto the LORD, he arose from before the altar of the LORD, from kneeling on his knees with his hands spread up to heaven.

2 Chronicles 7:1
Now when Solomon had made an end of praying, the fire came down from heaven, and consumed the burnt offering and the sacrifices; and the glory of the LORD filled the house.

Daniel 6:11
Then these men assembled, and found Daniel praying and making supplication before his God.

Daniel 9:20
And whiles I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God;