Allah is not the name of some random idol, nor is it a name that Muslims came up with. Allah is the name of God, and He has chosen it for Himself. The word God in Arabic means “Ilah.” However, the name of God that He has named Himself with is Allah. We even see, according to Christian writings, Jesus spoke Aramaic, and the word God in Aramaic is translated as “Elaha” or “Elah.” “Elohim” is also used frequently in the Bible. If we read the Old and New Testament in Arabic, we will see Allah’s name in these scriptures since this is the name of God. This is the name of the Creator of all things.
And Allah knows best.