Hi Connie,
This is such an excellent point. The incorrect idea that God would break a covenant with the Jewish people actually teaches a false understanding of who God is. If God were to break his promise, it would imply that he is not consistent and is untrustworthy. This is a dangerous lie. Thankfully, God does abide by his covenants, is unchanging, and is trustworthy–towards the Jewish people and all of us.