For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. (John 3:16)
The verse above gives an overview of what Christians believe. Here’s a quick analysis of what it means.
“For God So Loved The World” There is one God alone who created the entire universe. He is perfect in power as well as in love. He loves the world and everyone in the world.
“That He Gave” God loved the world so much that he gave it a wonderful gift. He was not required to give a gift to the earth, but he gave it because He wanted to.
“His Only Begotten Son.” God’s gift was the ultimate gift, the life of His only son in order to save the weak, helpless humans who had become trapped in sin. God’s son is “begotten” in the sense that He chose to be born of a human mother, and live and walk among us. But the Son has no actual beginning since He is God and is One with the Father.
“That Whoever Believes In Him” God’s gift is effective only in those who believe. God’s gift is not forced on those who think that they do not need it.
“Shall Not Perish” all humans are under condemnation for sin. They will die a spiritual death and be punished for eternity in hell unless they recieve God’s gift of His Son by believing. But those who do not believe will spend eternity in hell.
“But Have Everlasting Life” This is the reward of the believer. They are given everlasting life in heaven with God. They will be changed to be perfectly sinless, and will always be in fellowship with God.