God gets your attention with repetitions, like all the desolate women who couldn't bear a child until the Holy Spirit came.
Then he clarifies his message in Christ: the virgin birth.
Then he speaks to you in a verifiable and reproducible way: You are born of the Spirit when you are born again and you cannot be fruitful without him.
There are thousands of such patterns. You need not listen to blabbering opinions of seminary graduates who say that scripture is merely literal historical.