Isn't this false? Love doesn't imply a return on your investment, at least not the sort of unconditional love God is supposed to manifest.
Nathan didn't say that love requires reciprocal action or reciprocal love. He said that for love to be perfected, it needs a recipient. And he's right. If a person has all sorts of love in his heart but doesn't share it with anyone what use is it?
This seems to indicate to me that God loves our worship more than he loves us; which is fairly twisted.
God loves us so much that he was willingly tortured and crucified to redeem us from the natural and spiritual consequences of our sins; the sins that we each choose to commit.
Jesus will say, "depart from me I never knew you". Oh, what love! Just bask in it!
Jesus won't say "depart from me I never you" because someone won't worship him or for any sin. He will say "depart from I never knew you" because in order to know God, you must be born again. And no, contrary to popular belief "born again" is not just an evangelical's term; Jesus tells Nicodemus that in order to enter Heaven, a man must be born again.
This rebirth is the same as in 2 Corinthians 5:17:
"If any man be in Christ, he is a new creation; the old has passed away, all things are made new."
Paul goes into great detail what this means, but I'll put it in a nutshell by copying and pasting from my Gospel website,
God Loves You!
"Man's spirit is imperfect - not holy and righteous like God. God is perfectly holy and righteous, and as such cannot abide in the presence of anything less than perfect holiness and righteousness. It's his very nature. God can't exist contrary to his own nature.
But God is not happy with that. He wants everyone to have eternal life with him. 2 Peter 3:9 tell us that "God is not willing that any should perish but that all should come to repentance". God so loves the people of the world that he devised a rescue plan. He sent his only son, Jesus to Earth. The price of sin is spiritual death. Christ willingly paid that price for us by allowing himself to be crucified in our place. It only worked because Christ is perfect and holy not only in spirit, but also in flesh, unlike man. Christ paid the debt that we could not pay. He rose again on the third day, thereby defeating death.
Bringing God's answer, his "rescue plan", into your life is quite simple:
* Confess to God that you have sinned against him and that you are sorry for it.
* Ask him to forgive you of your sins.
* Ask him to come into your heart and be Lord of your life.
* Put your faith in Christ and what he has done for you.
Your sins will be forgiven, and Christ will make of you a new spirit clothed in his holiness and righteousness. He will make you, as 2 Corinthians 5:17 puts it, a "new creation". When God looks at you from that point on, he will not see sin; he will see the blood of Christ that has washed away all guilt."
I would contend that any average human being is capable of greater love than this.
"Greater love has no one than this, that one lay down his life for his friends." John 15:13
And that's what Jesus did.
In fact, Jesus went further; he laid down his life for his enemies:
"For while we were still weak, at the right time Christ died for the ungodly. For one will scarcely die for a righteous person--though perhaps for a good person one would dare even to die-- but God shows his love for us in that while we were still sinners, Christ died for us. Since, therefore, we have now been justified by his blood, much more shall we be saved by him from the wrath of God. For if while we were enemies we were reconciled to God by the death of his Son, much more, now that we are reconciled, shall we be saved by his life." Romans 5:6-10
I do not think that the "average human being" would lay down his life for his enemies.