"For God so loved the world, that He gave His only begotten Son, that whoever believes in Him should not perish, but have eternal life." John 3:16
However, human’s love is usually conditional and based upon how other people behave toward us. This kind of love is based upon familiarity and direct interaction. The Greek word "phileo" defines this kind of love, often translated "brotherly love." Phileo is a soulish kind of love - something that can be experienced by both believers and non-believers. This is in contrast to agape, which is love extended through the spirit. Agape love requires a relationship with God through Jesus, since the non-regenerated soul is unable to love unconditionally. Agape love gives and sacrifices expecting nothing back in return.