The emphasis in this phrase, “I. the Lord, have spoken” is strong enough for us to consider the veracity of the Bible. In the beginning of all things, while creating the world, It was His spoken word that brought existence to what He commanded be created. And so, it was that the world was created in six days and on the seventh, He rested. He was pleased with all that He had created. He had only to speak and the power of His words brought life and form in everything that He created. At the command of the Lord’s voice all subjected to Him. There was sun light to govern the day and moon to govern the night; Man was created in God’s image; and a beautiful garden was provided for him to live in and tend to. “When the Lord speaks the word that He will speak and the word that He shall speak shall be performed; it shall be no more delayed or prolonged, for in your days, O rebellious house, I will speak the word and will perform it, says the Lord God.” The spoken word of God is powerful to perform that which He sends it for. Isaiah 55:10-11 says, “For as the rain and snow come down from the heavens and return not there again, but water the earth and make it bring forth and sprout, that it may give seed to the sower and bread to the eater, so shall My word be that goes forth out of My mouth; it shall not return to Me void, but it shall accomplish that which I please and purpose and it shall prosper in the thing for which I sent it”. The Bible says, “He Who promised is reliable and faithful to His word” (Heb. 10:23b). The Lord spoke to Jeremiah and said, “I am alert and active, watching over My word to perform it” (Jer. 1:12b). That confirms that the written word of God is alive and powerful to perform His purposes and fulfills His promises.
The voice of the Lord thunders in power and might; it causes the ocean to rise in judgment. When He came down to Mount Sinai it was wrapped in smoke, for the Lord descended upon it in fire; its smoke ascended like that of a furnace and the whole mountain quaked greatly; as the trumpet blast grew louder and louder, Moses spoke and God answered him with a voice (Exodus 19:18-19). Then He spoke to the people of Israel in covenant with the nation, by giving them the ten commandments. They were all afraid when they perceived the thunderings and the lightenings, and the noise of the trumpet and the smoking mountain, and as [they] looked they trembled with fear and fell back and stood afar off (Exodus 20:18). Thunderings, lightenings, trumpet sounding, all represented the voice of the Lord in His holiness and power. Nor men, neither animals could stand at the foot of the mountain to face the physical presence of God, because of what nature became after sin entered the world. Sin, without a doubt, changed man and nature, causing them to be afraid of God and be separated from Him. “Hear, oh, hear the roar of His voice and the sound of rumbling that goes out of His mouth! After it His voice roars; He thunders with the voice of His majesty, and He restrains not when His voice is heard. God thunders marvelously with His voice; He does great things which we cannot comprehend” (Job 37:2-5). The letter to the Hebrews gives us a warning concerning our lack of zeal for the word of God: It says, “Let us therefore be zealous and exert ourselves and strive diligently to enter that rest, that no one may fall or perish by the same kind of unbelief and disobedience, for the Word that God speaks is alive and full of power; it is sharper than any two-edged sword, penetrating to the dividing line of the breath of life and spirit, and of joints and marrow, exposing and sifting and analyzing and judging the very thoughts and purposes of the heart, and not a creature exists that is concealed from His sight, but all things are open and exposed, naked and defenseless to the eyes of Him with Whom we have to do” (Heb. 4:12-13).