Historically Christians have made life hard for adherents to other religions because they believe they have the final, authoritative revelation from the right deity, hence the implication that all of the other religions lost legitimacy and expired long ago.
He likely had something like the Old Covenant/New Covenant distinction in mind. Out with Judaism, in with Christianity.
Historically Christians have made life hard for adherents to other religions because they believe they have the final, authoritative revelation from the right deity, hence the implication that all of the other religions lost legitimacy and expired long ago.