"than all the gods": They said: There was no idolatry in the world that Yithro did not come across and did not worship, viz.: "than all the gods. And Na'aman was even more conceding in this regard than he, viz. (II Kings 5:15) "Now I know that there is no G–d in all the land, but only in Israel." And thus, Rachav the harlot (Joshua 2:11) "for the L–rd your G–d is the G–d in the heavens above and on the earth below."
When She Hid the Israelite Spies, She Told Them for the Lord Your God
Mekhilta Tractate Amalek 3:42