What Zenus of Egypt did she not abandon?
Rashi: They relied also on Malchei Mitzrayim. We find that Hoshe'a ben Elah sent messengers to Soa Melech Mitzrayim (Melachim II, 17:4).
Radak: Even though she learned from idolatry from Ashur, she did not abandon what she learned in her youth, in Egypt, about idolatry and sorcery.
Malbim: Afterwards, Melech Ashur found a conspiracy in Hoshe'a ben Elah, who sent to Soa Melech Mitzrayim.
Why does it say "Ki Osah Shachvu bi'N'ureha"?
Rashi: From then they poured their Zenus on her, Lust for Zenus entered her from her youth.
Radak: Egypt taught to her [idolatry and sorcery] first.
Radak: They already had a Bris with Egypt.
Why does it use the expression "va'Yishpechu"?
Radak: They taught them profusely, like a matter that is poured, matters of divination and witchcraft.
