'True God' in the Bible

See my servant, whom I am supporting, my loved one, in whom I take delight: I have put my spirit on him; he will give the knowledge of the true God to the nations.

His light will not be put out, and he will not be crushed, till he has given the knowledge of the true God to the earth, and the sea-lands will be waiting for his teaching.

Give the word, put forward your cause, let us have a discussion together: who has given news of this in the past? who made it clear in early times? did not I, the Lord? and there is no God but me; a true God and a saviour; there is no other.

Give attention to me, O my people; and give ear to me, O my nation; for teaching will go out from me, and the knowledge of the true God will be a light to the peoples.

So that he who is requesting a blessing will make use of the name of the true God, and he who takes an oath will do so by the true God; because the past troubles are gone out of mind, and because they are covered from my eyes.