John 8:32," and you will know the truth,and the truth will set you free."
In the first century, Jesus spoke about freedom. He said to the Jews: “If you remain in my word, you are really my disciples, and you will know the truth, and the truth will set you free.” (John 8:31, 32) He was not speaking of freedom of speech or freedom of religion. He was certainly not speaking of liberation from the yoke of Rome, for which many Jews longed. No, this was something much more precious, a freedom granted, not by human laws or the whim of some human ruler, but by the supreme Sovereign of the universe, Jehovah. It was freedom from superstition, freedom from religious ignorance, and much, much more. Freedom granted by Jehovah is real freedom, and it will endure throughout eternity.
There are lots of passages, depending on what you mean by "freedom". I recommend you just do a web search with the words "Freedom in Bible".