'True God' in the Bible

That he praising himself in the earth shall praise himself in the true God; and he swearing in the earth, shall swear in the true God; for the former straits were forgotten, and because they were hid from mine eyes.

And this is eternal life, that they might know thee the only true God, and whom thou hast sent, Jesus Christ.

For they themselves proclaim of us what entrance we have to you, and how ye turned to God from images to serve the living and true God;

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