Verses with the word magog in the Old Testament (4 verses):

Genesis 10:2
The sons of Japheth; Gomer, and Magog, and Madai, and Javan, and Tubal, and Meshech, and Tiras.

1 Chronicles 1:5
The sons of Japheth; Gomer, and Magog, and Madai, and Javan, and Tubal, and Meshech, and Tiras.

Ezekiel 38:2
Son of man, set thy face against Gog, the land of Magog, the chief prince of Meshech and Tubal, and prophesy against him,

Ezekiel 39:6
And I will send a fire on Magog, and among them that dwell carelessly in the isles: and they shall know that I am the LORD.