The law of God is God’s word (in Exo. 34:28 the Ten Commandments, the main contents of the law, are called “the ten words” — see note there). As such, the law is God’s testimony (Exo. 16:34; 31:18; 32:15; 40:20; Psa. 19:7), God’s expression, a revelation of God to His people (see note John 1:12b and note Heb. 1:11, par. 1). The law of God reveals God’s attributes, showing that He is jealous (vv. 4-6; cf. 2 Cor. 11:2), holy (vv. 7-11), loving (vv. 6, 12-15; cf. Rom. 13:8-10; Gal. 5:14), righteous (v. 5), truthful (v. 16; cf. 1 John 1:5-6), and pure (vv. 2-3, 17). As the word of God and the testimony, the expression, of God, the law is a type of Christ as God’s Word and God’s testimony, God’s expression (John 1:1, 18; Rev. 19:13; 1:5; Col. 1:15).
The reality of keeping the law is to live God and express God. Such a living, a living in the eternal economy of God, is the living of a God-man, a life of continually denying the self and being crucified to live Christ, who is God’s testimony, by the bountiful supply of the Spirit of Jesus Christ for the enlarged and expanded expression of God (Matt. 16:24; Gal. 2:20; Phil. 1:19-21a; Rom. 8:4).