Great God is one of several descriptive names of God that speak of His strength and power. The Hebrew word gadol refers to greatness in size and importance and relates to the word “magnify” which is also used of God. It’s a call to increase His status (Ps. 40:16). The Aramaic and Greek words have the same meaning.
The Great God in Hebrew:
Strong’s Concordance numbers: 430, 1419
Bible reference: Neh. 8:6
And Ezra blessed the Lord, the great God. And all the people answered, Amen, Amen, lifting up their hands: and they bowed their heads, and worshipped the Lord with their faces to the ground. (Nehemiah 8:6 KJV)
Great God in Aramaic:
Strong’s Concordance numbers: 426, 7229
Bible references: Ezra 5:8; Dan. 2:45
Inasmuch as you saw that a stone was cut out of the mountain without hands and that it crushed the iron, the bronze, the clay, the silver and the gold, the great God has made known to the king what will take place in the future; so the dream is true and its interpretation is trustworthy. (Daniel 2:45)
Great God in Greek:
Ho megas Theos
Strong’s Concordance numbers: 3173, 2316
Bible reference: Tit. 2:13
Looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ (Titus 2:13 KJV)
Similar names for God are: the great, the mighty, and the awesome God; Great and mighty God; Great King; and Great One.