English-Greek and
Greek-English DICTIONARY

agape: (αγάπη, η)
love, affection, fondness

philadelphia: (φιλαδελφία, η)
   brotherly love

philostorgia: (φιλoστoργία, η)
affection, love     

Agape (αγάπη, η) as used in the Bible according to the Greek version of the New World Translation:

God is agape, 1 John 4:16
God's agape for us, John 3:16
Our agape for God, Matt. 22:37
Agape for neighbor, Matt. 19:19
Agape for the world, 1 John 2:15
Agape for our enemies, Matt. 5:44
Agape for the darkness, John 3:19
Agape for glory of men,> John 12:43
Agape for one's wife, <Eph 5:28, 33
such as Isaac's agape for Rebekah,  ....Gen 24:67
Jacob's agape for Rachel,
    Gen 29:18,
Romantic Agape of the Shulamite Maiden and her lover,
    Song of Solomon 2:3,5,7; 8:6,7

"the bed of expression of agape"
  Ezekiel 23:17
Agape as Lust, such as Amnon
had ... ...for Tamar, 2 Sam 13:1, 4, 15

Note that the Greek word agape means more than just Christian or principled love. It is also romantic love. Even the lust Amnon felt for his half-sister Tamar is translated as agape in the Greek NWT.

2 Sam 13:1,4,15:

1  "...and Amnon the son of David
fell in love (αγάπη) with [Tamar]...
4  ...At this Amnon said to him: "With
Tamar the sister of Absalom my brother I am in love (αγάπη)."

And after he had violated her it says:

  "And Amnon began hating her with a very great hatred, because the hatred with which he hated her was greater than the love (αγάπη) with which he had loved (αγάπη) her..."

It is not by studying the Greek word agape that we get to know that Jehovah is a God of love, as if the word has any special meaning, but rather we get to understand his great love by getting acquainted with his personality and tender care, such as his ransom provision for mankind. (1 John 4:8, 16)

"Jehovah, Jehovah, a God merciful and gracious, slow to anger and abundant in loving-kindness and truth, preserving loving-kindness for thousands, pardoning error and transgression and sin, but by no means will he give exemption from punishment." —Exodus 34:6,7