I don't know much about christianity but I wouldn't bet one shekel that the majority of christians will agree with that statement.
....and you Deut 13:1 are right, because if you read Matthew chapter 7 then you will know that Jesus taught the 'majority' today would be on the wide road leading to destruction and not eternal life.
I think too the majority of Christendom [so-called Christianity] would also not agree that the 'sheep' of Matthew [25 vs 31,32] are the people who are alive on earth today who can remain alive, and keep on living right here on earth into the start of Jesus 1000-year reign over earth.