'True God' in the Bible

Now Israel [has been] without the true God many days, and without a teaching priest, and without law,

But Yahweh [is] the true God, he [is] the living God, and {an everlasting king}. Because of his wrath the earth quakes, and [the] nations cannot endure his anger.

Now this is eternal life: that they know you, the only true God, and Jesus Christ, whom you have sent.

For [they] themselves report about us, what sort of welcome we had with you, and how you turned to God from idols to serve [the] living and true God,

And we know that the Son of God has come and has given us understanding, in order that we may know the one who is true, and we are in the one who is true, in his Son Jesus Christ. This one is the true God and eternal life.