Summary: God expressed immense love for humanity by giving His only Son, so that believers would gain eternal life and not perish. The purpose of this divine act was not condemnation, but to offer salvation. Belief in His Son brings salvation, while disbelief results in condemnation.
God so loved the world that he gave his only Son, so that everyone who believes in him might not perish but might have eternal life.
For God did not send his Son into the world to condemn the world, but that the world might be saved through him.
Whoever believes in him will not be condemned, but whoever does not believe has already been condemned, because he has not believed in the name of the only Son of God.