"For God" is one of the most recognizable scriptural references. But what does it mean?

The second part of John 3:16 helps us understand love.

God has made all of us a new creation in Him.

God loves us so much that he gave his one and only son to keep his promise to us.

Whoever means anyone, any time, at any place.

To believe is to accept something as true, genuine, or real.

What does eternal life mean? What does it mean in context of John 3:16?