Is it possible for an unconverted child to truly enjoy the Lord?

Dr. Joel Beeke states in this video that an unconverted person, whether they are a child or an adult, cannot truly enjoy the Lord. His or her conscience is always speaking against them. There is no love for the Lord and His ways. 

You must be born again and repent for your sins and trust that His Word is true. Then, you will experience true happiness and enjoy God. 

1 John 3:1 (NKJV) - "Behold what manner of love the Father has bestowed on us, that we should be called children of God! Therefore the world does not know us, because it did not know Him."