Thank you, Cyndie, for the clue of the town from which Christian Werbelow came. With the help of a German friend, I have FINALLY found both Werbelows and Heldts in the correct parish of Kries Pyritz, in what is now Poland. Werben is now called Wierzbno. Pyritz is now spelled Pyrzyce, and Stettin is now spelled Szczecin.
I have found the marriage record for Christian and Wilhelmine in several different parish records. I will be happy to share my sources and research with any and all, and will continue to browse thorough the parish records to continue back through the generations.
The parish records can be found in the familysearch.org catalog here: https://familysearch.org/search/collection/1874205
Click on the link to browse images (halfway down)
Choose a parish. I've had the best luck using the parish records called Alt Prilipp. There are also records that provided clues in Werben and Sabes.