"Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven.
I know that to some this might seem like a contradiction. There are many people who know the verse that says, "...whosoever shall call upon the name of the Lord shall be saved." But Matthew 7:21 doesn't contradict this verse, it clarifies it. It tells us what it means to "...call upon the name of the Lord..."
The people who call, are the people who do.