Love is a central theme of Scripture and is a primary characteristic of God's nature (e.g., 1 John 4:8) and the central demand of human life both in relation to God and fellow mankind (Matthew 22:37-40). The most frequently-used term in the NT (agape) generally signifies a spontaneous self-giving unmerited love. This meaning is evident in John's description of love as God's giving of Himself in the gift of His Son for the good of those who were totally undeserving (cf. 1 John 4:10). Another word (phileo), while overlapping at times with agape, refers primarily to the love between friends (cf. John 11:3, 36). All love has its source in God, who is love (1 John 4:7-8), and is available to human beings only through the Spirit of God (Galatians 5:22). It is clear from the characteristics given below that love involves the total person, i.e., one's thought, feeling, and action (See also LOVINGKINDNESS).
This topic is from the Lockman Foundation.