Explanation

ALLAH is Al-Jaleel, The One who is Majestic, Glorious, Sublime, The One who is Great and above all in rank and dignity, The One who is above all, Superior, Independent, The One who is the Owner and the Source of all Attributes of Greatness and Majesty, The One whose greatness and majesty are immeasurable and cannot be comprehended by the senses and The One whose glorious nature is indicated by the great things that are created.

The root word jeen-lam-lam has numerous classical Arabic connotations such as to be supremely great, to be glorious, majestic, to be sublime, to be high, lofty, far above, and independent.

Quran References

And there will remain the Face of your Lord, Owner of Majesty and Honor. (Quran 55:27)

And when Moses arrived at Our appointed time and his Lord spoke to him, he said, “My Lord, show me [Yourself] that I may look at You.” [ Allah ] said, “You will not see Me, but look at the mountain; if it should remain in place, then you will see Me.” But when his Lord appeared to the mountain, He rendered it level, and Moses fell unconscious. And when he awoke, he said, “Exalted are You! I have repented to You, and I am the first of the believers.” (Quran 7:143)