Nope. The Bel or
Baal which forms the end of
Jezebel was the name of a Middle Eastern god who was known, unremarkably, as the Lord! But
Isabel is spanish for
Elizabeth, and the part of that name that means God or Lord is the first syllable, the El bit. The
Beth at the end, that became Bel, means House, so it's something like House of the Lord or Place Consecrated to the Lord.