The New Testament Gospel was originally written in the Greek language. And the word “Love” in Greek is used in 4 different ways,eros, phileo, stergein,and agape.
The first love is called “Eros” is passionate love which desires the other for itself; it is a love that is related to physical relationship, like husband and wife relationship. This Greek word is not used in the New Testament, probably because its origin came from the mythical god Eros, the god of love. “Phileo” and “Stergein” love means “kindly affectioned”. This type of love can also exist between brothers and sisters, aunts and uncles and other family members but it is most frequently associated with a deep, abiding friendship - a love that is shared between the best of friends, much like that of King David and Jonathan, King Saul’s son (1 Samuel 18:1). Be kindly affectioned one to another with brotherly love; in honor preferring one another; Romans 12:10(KJV).
“Agape”–Gods kind of Love or Unconditional Love. This is the Greek word for love at its ultimate and it is the most self-sacrificing love. Agape also means “charity”. This type of love is the love that God has for His own children. This type of love is what was displayed on the cross by Jesus Christ.
God is love and He loves us unlike the world, with no strings attached. His love for us is AGAPE. God loved us first (1John 4:18) and He created us in His image and likeness, hence we are born with this innate quality to love and be loved. The first commandment also states that we ought to love God with all our heart.
My beloved friends, let us continue to love each other since love comes from God. Everyone who loves is born of God and experiences a relationship with God. The person who refuses to love doesn’t know the first thing about God, because God is love—so you can’t know Him if you don’t love. This is how God showed His love for us: God sent His only Son into the world so we might live through Him. This is the kind of love we are talking about—not that we once upon a time loved God, but that He loved us and sent His Son as a sacrifice to clear away our sins and the damage they’ve done to our relationship with God.
My dear, dear friends, if God loved us like this, we certainly ought to love each other. No one has seen God, ever. But if we love one another, God dwells deeply within us, and His love becomes complete in us—perfect love! 1 John 4:7-12(The Message).
God created us with two basic needs: the need to be loved and the need to love. Our need "to be loved" can only be fulfilled by knowing that God loves us with unconditional Love (Agape). This is what gives us our security and our identity in this life. God loves us deeply, irrespective of what we are or what we have done in life.