But before getting to the heart of it, I’d like to dispel a popular notion, popularized especially by certain protestant groups, that there are two different Gods, or myths, or types of God or whatever, between the Old and New Testament; they will often say that the OT God was this mean, nasty guy, and the NT God is all full of love and mercy.
First of all the Old Testament is full of passages of tender love, mercy and forgiveness. Hos 11:1 “When Israel was a child, I loved him, and out of Egypt I called my son.” Or Psalms such as 130:2-3 “Praise the Lord, O my soul, and forget not all his benefits- who forgives all your sins, etc.” and 31:7, “I will be glad and rejoice in your love, for you saw my affliction and knew the anguish of my soul.” Episodes such as the mercy David showed Saul, or the pity God had on Israel after its contemptible conduct in the desert by showing them still to the Holy Land, are a few examples, too few, to show how pleased God is to have good triumph over evil. When the Jesus Lord taught us to love, he wasn't saying anything new, for the OT has passages such as Dt 6:5 “Love the Lord your God with all your heart and with all your soul and with all your strength,” or again, Lev 19:34, “The alien living with you must be treated as one of your native-born. Love him as yourself, for you were aliens in Egypt,” and “love your neighbor as yourself” in Lev 19:18.
Then there is the revelation of marriage. As a sign, it is perfectly achieved by the saints in their perfect union with God. But on earth, it is the greatest form of human love, yet always less than divine charity. (That said, when it is joined to divine charity by a marriage which is lived out with holiness, that is a great thing, yet a hard achievement.) Rachel and Leah; Hosea who wished to take his beloved to the solitude of the desert and there speak to his heart, the union of Adam and Eve. The entire Canticle of Canticles is a love poem… now, dear Hilary, as it has some erotic content, please submit to my judgment on this, and do not read it unless your confessor or parents know you are reading it; the impressions it can make upon an adolescent, especially one who has not had a formal education in reading that book in particular, could do you more harm than good.
The problem was, the Israelites of those days were so dense and hard-hearted (as the scripture itself testifies) before God’s teaching about love, that they neither understood it nor practiced it in Israel, except for a few devout souls such as Mary, Joseph, Elizabeth, Simeon and surely others like them. Christ in Mt. 19:8 even said that divorce was a tolerated evil, a concession to Moses, “because of the hardness of your hearts.”
Just as tender love is found in the OT, the NT isn’t all affection and teddy bears. The Lord Jesus Christ speaks about hell more than any one in the entire bible. He describes it as fire, as the place where the “worm dieth not” (ick, by the way! Mk 9:48), a place of torment, etc. He talks about demons. He rebukes the Pharisees ferociously all over the four Gospels, but especially in Mt 23. Then in other places in the NT, St. John has a vision of hell as a lake of fire, the four horsemen of the Apocalypse devastate the world, St. Paul energetically rebukes the early communities for their infighting, for their return to Judaism, for incest (!); and then here comes St. Peter in Acts (I think around chapt. 5) where he slays Ananias and Saphira witht the word of his mouth. (Gulp.)
OK, so all that to say that when people easily lop the OT into the “mean nasty” and the NT into the “warm fuzzy,” I don’t buy the distinction.