As you can see I put the inverted commas around the word "Christian" and "sheep", meaning those who claim to be "Christian"
The Bible tells us that many will come to Jesus on that day saying "Lord, Lord, didn't we cast out demons and do great things in your name", then He will say "depart from me you workers of iniquity, for I never knew you".
The point is, these who come to Him believed they were Christians. They performed many wonders in His name, these are not the outright unbelievers who never believed in Him. These are people who attended Church all their lives and lived as Christians, they gave lots of money to the Church and helped the poor and sacrificed much for the Lord.
This describes the 90% of so called Christians who are in for a rude , our pastor warns us about these "Christians" all the time. They are deceived and they deceive others, they are the same types of hypocrites as those who crucified Christ. They are religious on the outside but wicked on the inside.