In the Bible, the form of covenant (in both the Old and New Testaments) is such that the indicatives of grace are always prior to the imperatives of law and human obligation. “I have loved you, I have redeemed you . . . therefore, keep My commandments. . . .” But Judaism turned it the other way round. “If you keep the law, God will love you. If you keep the sabbath, the Kingdom of God will come”, etc. That is, the imperatives are made prior to the indicatives. The covenant has been turned into a contract, and God’s grace made conditional on man’s obedience. It is precisely against this inversion of the order of grace that Paul protests in Galatians 3:17-22. God made a covenant with Abraham, and although the law came four hundred and thirty years later (to spell out the obligations of grace) it did not suddenly introduce conditions of grace. It did not turn the covenant into a contract. To introduce conditions would be to break a promise.
—James B. Torrance, “Covenant or Contract? A Study in the Theological Background of Worship in Seventeenth-Century Scotland,” Scottish Journal of Theology 23 (1970):56