Did the Arabs of the pre-Islamic era affirm the existence of the Throne, and how did they come to know of it, even though it is one of the fundamentals of Islamic creed?

The Arabs were not ignorant of the existence and majesty of the Throne, as they still retained some remnants of the religion of Abraham. This is evidenced by its appearance in their poetry, such as the saying of Waraqa ibn Nawfal: "Glory be to the Owner of the Throne, glory that endures for Him... And before us, Al-Judi and the solid earth glorified Him." And the saying of Umayyah ibn Abi al-Salt: "Glorify Allah, for He is worthy of glory... Our Lord in the heaven became mighty by the highest structure that preceded creation... And above the heaven, He made a couch." The Arabs knew the Throne as a couch. Among what Islam brought was the mention of some attributes of the Throne, as in His (Allah's) saying: "And He is the one who created the heavens and the earth in six days, and His Throne was upon water," and His saying: "And the angels will be on its borders. And eight will bear the Throne of your Lord above them, that Day."