Isaiah 43:10-12, “You are my witnesses,” declares Yehovah,
“and my servant whom I have chosen,
so that you may know and believe me
and understand that I am he.
Before me no god was formed,
nor will there be one after me.
11 I, even I, am Yehovah,
and apart from me there is no savior.
12 I have revealed and saved and proclaimed—
I, and not some foreign god among you.
You are my witnesses,” declares Yehovah, “that I am God.”
Who do you worship as a Christian? If you are a Christian, you worship Jesus, your Savior, and Lord. This is why we Christians sing songs to Jesus; we worship Jesus, we trust in Jesus, and we look to Him to meet our needs and save us. This is why most Christians see Jesus as their God and why the God of the Christians is Jesus Christ.
However, in Isaiah 43, we get a different perspective on the God of the Bible. Here we have Yehovah, the God of the Old Testament, the God of Abraham, Isaac, Jacob, and Jesus (John 20:17), telling us He is the only God and the only Savior. He even goes as far as to say there will never be another God and there is no other Savior and will be another Savior.
We never see Jesus telling anyone to worship Him or to look to Him for their needs. We never see Jesus telling anyone to have passive faith in Him for their Salvation. Throughout the Gospels, Jesus says; worship Yehovah, make sure you have an active faith in Yehovah shown in how you choose to live your life, look to Him for your Salvation.
So when we have Yehovah telling us, He is the only Savior, the only God, and there will never be another god or another Savior. And we have His Son Jesus confirmed this by telling us to look to His Father Yehovah and trust in His Father for our Salvation; why then do Christians reject this and choose to worship and trust in Jesus?
In Luke 6, Jesus asks us a question; why do you call Me Lord, but you do not obey Me?
When we confess Jesus as Lord, but we ignore His teachings on who we should worship, trust in and look to for Salvation, our confession is false. He is only our Lord if we do what He told us to do, and He told us to worship His Father Yehovah by showing our love for His Father in our obedience to the Mosaic law.
When we read Isaiah 43, it is apparent it is a warning against idolatry. If we believe Yehovah is not the only Savior and the only God, we are guilty of idolatry. So, according to the Bible, when Christians look to Jesus as their God, worship Jesus as their Savior, and trust in Him to meet their needs, they are not worshiping the Jesus of the Bible. They are instead worshiping a false Jesus, a Jesus who does not exist who is an idol.
This is why, in Matt 7:21-23, we see Christians rejected by Jesus because they have made themselves guilty of lawlessness. When you worship idols, you are living in sin and lawlessness.
So what should we do?
If you believe in Jesus as your Lord, you should show the world that He is your Lord by choosing to obey His teachings. He taught us to worship Yehovah, to serve Yehovah by following His law – the law of Moses and to trust in Yehovah for Salvation.
Yehovah is more than able and more than willing to save you here and now in this life and in the life to come if you accept His conditions for Salvation. What are they? Obedience to His law, the law of Moses. Idol worship is forbidden in the law of Moses, it is a great sin that will cause you to lose your Salvation both here and now and in the life to come.
So whatever you might need Salvation from, look to Yehovah, the God of Abraham, Isaac, Jacob, and Jesus. He loves you, and He has proven His more than willing and more than able to save you by giving you His Son to teach you how to live and to suffer and die for all the times you failed to show your love for Yehovah.