“The Word of God” as Equal to, Yet Distinct from, “The Scriptures”
The book of Acts records the earliest days of the Christian church established by the Lord Jesus Christ. After His ascension, the apostles and disciples of Christ sought to fulfill His commission by preaching the Gospel, and teaching all to observe all the things that Christ had taught them.Their ministry, therefore, was to transmit and defend the propositional truths revealed to them by Christ, which we find in the four Gospels, and which they called the Word of God or the Word of the Lord. This Word is equally authoritative, but it is differentiated from Scripture in a number of different places, perhaps most strongly in Acts 17:10-13. Paul’s preaching to the Bereans is not set in opposition to the Scriptures but is, rather, set beside it, as we read in verse 11b: “…they received the word with all eagerness, examining the Scriptures daily to see if these things were so.”
Here we would do well to mark a few things: (i.)what was preached by Paul was the Gospel, seeing as we have established that the phrase “the Word of the Lord” (or “the Word of God”) is, in the book of Acts, synonymous with the Gospel (both in its stricter, proper sense, and in its broader, more inclusive sense); (ii.)the content of this message is differentiated from that which is found in the Old Testament Scriptures; (iii.)the content of the teaching/preaching of Paul is not contradictory to the OT, it is complementary in two respects, viz. (a.)completing OT revelation in the life, death, burial and resurrection of Christ (i.e. the content of the four canonical Gospels), and (b.)fleshing out the details of OT prophecy in light of its fulfillment in Christ; and (iv.)the content of Paul’s teaching/preaching is called “the Word of the Lord” or “the Word of God,” just as the OT is, and is, therefore, implicitly shown to have equal status as the Divinely inspired truth of God.
There is no hierarchy between the OT and the content of the preaching of the apostles, but there is a clear distinction that is maintained which shows us that the two are inseparable from one another, as the OT foretells what would occur, and the teaching/preaching of the apostles explains how those things were accomplished in Christ. Therefore, what we see in the books of Acts in this distinction between the Word of God and the Scriptures is the beginning of the New Testament canon, it would seem, which the Holy Spirit shows us is first contained in the teaching/preaching of the apostles, and is later inscripturated in the 27 books of the New Testament. Christ does the same in Matthew 5:17-18 – where He affirms the nature of the OT Scriptures as inerrant, infallible, unbreakable, etc – and Matthew 24:35 – where He affirms the same things about His own Words, equating His Words with Scripture. The New Testament affirms that all that Christ has commanded (i.e. all that He preached and taught) as well as that which was taught by the apostles and later inscripturated are, in fact, the very To Word of God.
 Cf. Acts 3:12-26; 4:31; 5:41-42; 6:1-7; 12:24; 13:48-49; 14:5-7; 15:35; 16:10, 30-32; 17:10-13; 18:24-28 & 19:8-10, 19:19-20.
 Cf. John 10:35b
 These two verses, understood in light of the book of Acts and, especially, the Great Commission, divide God’s revelation to man into two main parts: (i.)the Law (i.e. the Old Testament) and (ii.)the life, death, burial and resurrection of Christ and what doctrines necessarily flow from His them (i.e. the New Testament).