Luke 13: 22- 30
And He (Jesus) went through the cities and villages, teaching, and journeying toward Jerusalem.
Then said one unto Him, Lord are there few that be saved? And He said unto them.
Strive to enter in at the straight gate: for many, I say unto you, will seek to enter in, and shall not be able.
When once the Master of the house is risen up, and hath shut the door, and ye begin to stand without, and to knock at the door, saying, Lord, Lord, open unto us; He shall answer and say unto you, I know you not who ye are:
Then shall ye begin to say, We have eaten and drunk in Thy presence, and thou hast taught in our streets.
But, He shall say, I tell you, I know you not who ye are; depart from Me, all ye workers of iniquity.
There shall be weeping and gnashing of teeth, when ye shall see Abraham, and Isaac, and Jacob, and all the prophets, in the Kingdom of God, and you yourselves thrust out.
And souls shall come from the east and from the west - and from the north and from the south and shall sit down in the Kingdom of God.
And behold, there are last which shall be first, and there are first which shall be last.
Friend, the above worlds are those spoken by Jesus as remembered by Luke with the help of the Holy Spirit.
He speaks of many saying they know of Him but He says they do not know Him.
This is the difference that we need to understand.
Do you "know of" Jesus or do you "know" Jesus?
If you desire to go to Heaven and be with God then you should be able to answer, "I know Jesus" with confidence and in Truth.
Bless you on your journey.