Think of the simplicity of John 3:16-17. "For God so loved the world that he game his one and only Son, that whoever believes in him shall not perish but have eternal life. For God did not send his Son into the world to condemn the world, but to save the world through him."
It's simplicity is often what keeps people from receiving it. But its simplicity often gives us a need to complicate it.
The Apostle Paul did not complicate the gospel but kept it simple for it is simple. He knew the power inherent in the gospel - "For I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile. For in the gospel the righteousness of God is revealed - a righteousness that is by faith from first to last, just as it is written: 'The righteous will live by faith' (Romans 1:16-17)."
- We have a problem with sin which has separated us from God.
- Jesus died for our sin so that we could be reconciled to Him.
- If we believe in Him, He gives us eternal life.
- And that changes everything in this life and in the life to come.
Don't be embarrassed with the simplicity of the gospel. And don't complicate its simplicity. The Holy Spirit is perfectly capable of bringing great understanding over time as to the ongoing implications of putting our faith in Jesus. The power of the gospel resides in the God behind the gospel, not in our ability to make it sound intellectually acceptable. It is so simple that the simplest man or woman or child can understand it. Our job is to share it. His job is to penetrate the hearts of those we share it with.
In fact, its very simplicity is the reason that many do not accept it according to Paul in 1 Corinthians 1. He writes, "For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God. For it is written: I will destroy the wisdom of the wise; the intelligence of the intelligent I will frustrate...For the foolishness of God is wiser than human wisdom and the weakness of God is stronger than human strength (1 Corinthians 1:18-25)."
The gospel is simple. It is so simple that many consider it foolish. But it is the power of God for those who believe. And it is the God behind the gospel who gives people the ability to understand and respond to it. Our job is to share it in all of its simplicity and let the Holy Spirit work in the hearts of those we share it with. Don't complicate the gospel.