It's not WHAT you know, it's WHO you know." This quote refers to the "good old boy network." In other words, when looking for a job, it didn't matter how qualified for the job you were, it was instead who you knew in the organization that could get you in the door.
I know a lot of stuff. I do some good. I work hard. I try to be nice. But I can tell you, what I know won't get me into Heaven. If I can quote the Bible from memory from Genesis to Revelation, that isn't going to get me there. If I take the gospel to every third world country, that won't get me there. If I give all my money to the poor, that won't get me to Heaven.
No, truly this is a case of not what you know, but WHO you know. I know Jesus. Because I know, love, and have accepted Jesus as my Savior, I accepted into Heaven. It doesn't matter if I'm the dumbest punk on the block, or the smartest gal on earth. None of that gets me to Heaven. Just knowing Jesus.
"Knowing you, Jesus, knowing you. There is no greater thing. You're my all, you're the best. You're my joy and righteousness, and I love you Lord." (Graham Kendrick, song below)
I've got friends in high places. So who do know you at the top?
1 Corinthians 13:2 -- If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but have not love, I am nothing.
John 17:3 -- Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent.
1 John 5:20 -- We know also that the Son of God has come and has given us understanding, so that we may know him who is true. And we are in him who is true—even in his Son Jesus Christ. He is the true God and eternal life.