Where does “Lilja” come from?

Lilja (Icelandic) comes from Latin līlium, from Ancient Greek λείριον, from Fayyumic Coptic ϩⲗⲏⲣⲓ, from Demotic ḥrry, from Egyptian ḥrrt — flower, blossom.

Lilja (Icelandic): A female given name; A celebrated religious poem...