From Thomas J Oord’s new book The Nature of Love:
Even before Jesus Christ revealed God’s nature most clearly, biblical authors considered love a, if not the, primary attribute of God. The phrase “steadfast love” is the most common Old Testament description of God’s nature. Divine love is relentless. God’s love is everlastingly loyal. The psalmist speaks often of God’s steadfast love for creation, making statements such as “the earth is full of the steadfast love of the LORD” (Ps. 33:5). In Jeremiah 31:3, God declares, “I have loved you with an everlasting love.” Even King Huram of Tyre testifies that God loves the chosen people (2 Chr. 2:11). Deuteronomy affirms that God loves “the strangers” or alien peoples (Duet. 10:18). Old Testament writers witness powerfully to the love of God.