'True God' in the Bible

For many days Israel was without the true God and without a teaching priest and without law.

But the Lord is the true God;He is the living God and the everlasting King.At His wrath the earth quakes,And the nations cannot endure His indignation.

This is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent.

For they themselves report about us what kind of a reception we had with you, and how you turned to God from idols to serve a living and true God,

And we know that the Son of God has come, and has given us understanding so that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life.