The Quran is the word of Allah and is not created. What is meant by that is that Allah spoke the words of the Quran, which Jibril heard from Him, and brought down to and conveyed it to Prophet Muhammad.

1.. There is nothing like unto Allah, may He be glorified and exalted, and nothing resembles Him. There is nothing like unto Him and the believer believes in the attributes of Allah, may He be glorified, but they cannot be likened to the attributes of created beings. 2.. There is a difference between manifesting and descending. Manifesting means appearing; what is meant is appearing to people’s eyes. With regard to descending, we believe that Allah, may He be exalted, descends every night to the lowest heaven, during the last third of the night. This descending happens in a manner that is befitting to His majesty. For more details, please see the long answer.

Allah descends every night to the lowest heaven when one-third of the night remains. The descent of Allah to the lowest heaven is in a real sense, in a manner that befits His Majesty and Might. Allah descends however He wills, whenever He wills.