John 3:16

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. 

For God so loved the world 
Romans 5:8  But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.
Ephesians 2:4-5  But because of his great love for us, God, who is rich in mercy, made us alive with Christ even when we were dead in transgressions--it is by grace you have been saved.
1 John 4:9-10  This is how God showed his love among us: He sent his one and only Son into the world that we might live through him. This is love: not that we loved God, but that he loved us and sent his Son as an atoning sacrifice for our sins.

that he gave 
Isaiah 9:6  For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.
Romans 8:32  He who did not spare his own Son, but gave him up for us all--how will he not also, along with him, graciously give us all things?

his one and only Son 
Genesis 22:12  "Do not lay a hand on the boy," he said. "Do not do anything to him. Now I know that you fear God, because you have not withheld from me your son, your only son."
John 1:18  No one has ever seen God, but the one and only Son, who is himself God and is in closest relationship with the Father, has made him known.

that whoever believes in him shall not perish but have eternal life 
John 3:36  Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life, for God's wrath remains on them.
John 6:29  Jesus answered, "The work of God is this: to believe in the one he has sent."
John 6:40  "For my Father's will is that everyone who looks to the Son and believes in him shall have eternal life, and I will raise them up at the last day."
John 11:25-26  Jesus said to her, "I am the resurrection and the life. The one who believes in me will live, even though they die; and whoever lives by believing in me will never die. Do you believe this?"

Scriptures taken from the Holy Bible, New International Version® NIV®, 
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