There are some really negative character traits in this book. There's a lot of anti-Semitism in here, but that's because of the time in which it was written. However, one of the big virtues that the reader is constantly brought back to is the virtue of fortitude. You see this the most in Isaac and Rebecca, the two Jewish characters in the book. Isaac, even in the face of fiery persecution, keeps standing up for his faith. He refuses to submit to the angry de Bracy and Bois-de-Guilbert, who, in his mind, are asking him to sin. Rebecca too shows great fortitude in refusing Bois-de-Guilbert's marriage proposal, and his constant pleas for her to convert.The Catechism of the Catholic Church says, "God cannot be tempted by evil and he himself tempts no one; on the contrary, he wants to set us free from evil. We ask him not to allow us to take the way that leadsto sin. We are engaged in the battle "between flesh and spirit"; this petition implores the Spirit of discernment and strength." This quote pertains perfectly to Ivanhoe! Isaac and Rebecca were fighting between flesh and spirit...and in the end, spirit won.
I hope you enjoy Ivanhoe as much as I did, and let me know what you think in the comments!