The early Christian teachers and apostles had no hesitation in taking that sacred name--the word of the Lord--to describe the message which they spoke. One of their earliest prayers when they were left alone was, that with all boldness they might speak Thy word; and throughout the whole of the Acts of the Apostles the preached Gospel is designated as the word of God, even as Peter in his epistle quotes one of the noblest of the Old Testament sayings, and declares that the 'word of the Lord' which 'abideth for ever' is 'the word which by the gospel is preached unto you.'
Clearly, then, Paul here is exhorting the Ephesian Christians, most of whom probably were entirely ignorant of the Old Testament, to use the spoken words which they had heard from him and other preachers of the Gospel as the sword of the Spirit. Since he is evidently referring to Christian teaching, it is obvious that he regards the old and the new as one whole, that to him the proclamation of Jesus was the perfection of what had been spoken by prophets and psalmists. He claims for his message and his brethren's the same place and dignity that belonged to the former messengers of the divine will. He asserts, and all the more strongly, because it is an assertion by implication only, that the same Spirit which moved in the prophets and saints of former days is moving in the preachers of the Gospel, and that their message has a wider sweep, a deeper content, and a more radiant light than that which had been delivered in the past. The word of the Lord had of old partially declared God's nature and His will: the word of God which Paul preached was in his judgment the complete revelation of God's loving heart, the complete exhibition to men of God's commandments of old; longing eyes had seen a coming day and been glad and confidently foretold it, now the message was 'the coming one has come.'
It is as the record and vehicle of that spoken Gospel, as well as of its earlier premonitions, that the Bible has come to be called the word of God, and the name is true in that He speaks in this book. But much harm has resulted from the appropriation of the name exclusively to the book, and the forgetfulness that a vehicle is one thing and that which it carries quite another.
II. The purpose and power of the word.
The sword is the only offensive weapon in the list. The spear which played so great a part in ancient warfare is not named. It may well be noted that only a couple of verses before our text we read of the Gospel of peace, and that here with remarkable freedom of use of his metaphors, Paul makes the word of God, which as we have seen is substantially equivalent to the preached Gospel, the one weapon with which Christian men are to cut and thrust. Jesus said 'I come not to send peace, but a sword,' but Paul makes the apparent contradiction still more acute when he makes the very Gospel itself the sword. We may recall as a parallel, and possibly a copy of our text, the great words of the Epistle to the Hebrews which speak of the word of God as 'living and active and sharper than any two-edged sword.' And we cannot forget the magnificent symbolism of the Book of Revelation which saw in the midst of the candlestick one like unto a Son of Man, and 'out of His mouth proceeded a sharp, two-edged sword.' That image is the poetic embodiment of our Lord's own words which we have just quoted, and implies the penetrating power of the word which Christ's gentle lips have uttered. Gracious and healing as it is, a Gospel of peace, it has an edge and a point which cut down through all sophistications of human error, and lay bare the 'thoughts and intents of the heart.' The revelation made by Christ has other purposes which are not less important than its ministering of consolation and hope. It is intended to help us in our fight with evil, and the solemn old utterance, 'with the breath of His mouth He will slay the wicked,' is true in reference to the effect of the word of Christ on moral evil. Such slaying is but the other side of the life-giving power which the word exercises on a heart subject to its influence. For the Christian soldier's conflict with evil as threatening the health of his own Christian life, or as tyrannising over the lives of others, the sword of the Spirit is the best weapon.