“I am the LORD, and there is none else, there is no God beside Me: I girded thee, though thou hast not known Me: that they may know from the rising of the sun, and from the west, that there is none beside Me. I am the LORD, and there is none else. I form the light, and create darkness: I make peace, and create evil: I the LORD do all these things.” Isaiah 45:5-7 (KJV)
Speaking through the prophet the LORD states with power and authority that there is no other God.
It is the purpose of God, His Word, His Spirit that all will know that He is the LORD. He has been working in the world and through mankind so that the world may know that He alone is GOD and that that there is no other.
When He chose Israel as His light to the nations of the world He gave them His word. He also sent His Son Jesus to the people of Israel. “He came unto His own, and His own received Him not” (John 1:11). Just as they had over and over again rejected the word of the law given by Moses, they also rejected the prophets He had sent; they rejected Isaiah, and his words given by God; they rejected the Son of God Himself.
Because of their rejection they experienced “Evil” or as newer translations state it “Calamity”. When one rejects the light they will walk in darkness. When one, or a nation rejects the peace of God, then they will walk in “evil” or “calamity”.
God has given us His Light. If we reject that we choose darkness. God has given us peace. If we reject peace we turn to evil, and choose calamity that follows.
In the Acts of the Holy Spirit Doctor Luke was inspired by the Spirit to write,
“Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.” Acts 4:12
This is speaking of none other than the Lord Jesus Christ, the Son of God, God the Son. There is no other God by which we can be saved.