What did Jesus say was His mission?
Matt 10:34,35
Think not that I am come to send peace on earth: I came not to send peace, but a sword.
For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law.
This is not some love fest amongst ourselves we are striving for, contrary to the ecumenalists belief... we are to unite in truth and obedience to Him and His precepts.
Matt 7:21-23
Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
This is not speaking of unbeleivers but those that profess to be followers of Christ. Notice it doesn't say 'some', it says 'many'.
Luke 6:46-49
And why call ye me, Lord, Lord, and do not the things which I say?
Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like:
He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock.
But he that heareth, and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great.
Notice again, these are those that have 'come to Christ' meaning professed their love and loyalty to Him.... Christians. The difference between them is their obedience to His precepts and commandments.