ʿAṯtar or Athtar, is a deity whose role, name, and even gender varied across ancient Semitic religion. In both genders, ʿAṯtar is identified with the planet Venus, the morning and evening star. ʿAṯtar
South Arabian fragment of a stela depicting a reclining ibex and three Arabian oryx heads, which were associated with ʿAṯtar.
Lucifer is believed to be a fallen angel and the Devil in Christian theology. Lucifer is associated with the sin of pride and believed to have attempted a usurpation of God, whereafter being banished
ʿAṯtar
…heights of Saphon). Athtar's epithet could also mean "luminous" which may further align the figures, but this is disputed as there is no evidence of Helel's cultic worship or existence, and it is being used as a rhetorical device to mockingly designate the king of Babylon. The New Oxford Annotated Bible…
The Fallen Angel (1847) by Alexandre Cabanel
Lucifer (the morning star) represented as a winged child pouring light from a jar. Engraving by G. H. Frezza, 1704.
Planet Venus in alignment with Mercury (above) and the Moon (below)
Le génie du mal (1848) by Guillaume Geefs (Liège Cathedral), known in English as The Genius of Evil, The Spirit of Evil, The Lucifer of Liège, or simply Lucifer.