For God so loved the world, that he gave his one and only Son, that whoever believes in him should not perish, but have eternal life.
God's love for mankind is pure, spontaneous, and constant.  Jesus did not die on the cross to compel God to love people, but because he already loved them, the cross being a result of God's love, not the cause of it.  God's holy love is not inconsistent with His wrath, for God's love extends to man himself, but not to the sins that man is guilty of.  The doom of the wicked appears by implication in this very statement of his love.