"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." (Luke 13:28, emphasis mine)
Out in front
Jesus isn't joking around. The prior verse--the one wrapping up a parable that begins with "Strive to enter in at the strait gate:" (verse 24)--says, "I tell you, I know you not whence ye are". This is stark. I feel that the doctrine of omniscience doesn't necessarily touch on the fact that the things of life we choose not to share with the Lord remain just that. Granted, it's hard to think about telling God every little thing we experience. I used to think that's what was required. Now, all I'd have to say is "required" is simply maintaining the relationship and connection. And doing so in whatever way we choose. This is the beauty of relationship. The joys and pain and feeling. Every thing that means something to you means something to God.
"Behold, O God our shield, and look upon the face of thine anointed. For a day in Thy courts is better than a thousand. I had rather be a doorkeeper in the house of my God, than to dwell in the tents of wickedness." (Psalm 84:9-10)
Down in front
I love the above because it evokes this idea of running around the sanctuary like a kid, toy in hand, soaking in the presence of almighty God. The atmosphere aglow with His beauty and joy and light. This is what we had as children and it's what Jesus made possible with His death and resurrection. Possible to reobtain in adulthood. And it's what He wants to share with everyone. But if we elect to ignore Him, erroneously thinking that what we encounter is beneath His time and attention, there will be aspects of us that don't know Him. The King James connotation of "know" has deeper intimacy in its definition. Take that toy, that joy, that feeling, and show it to your heavenly Father. He wants to see.
"For the Lord God is a sun and shield: the Lord will give grace and glory: no good thing will He withhold from them that walk uprightly." (Psalm 84:11)