'Porches' in the Bible

Now in Jerusalem, near the Sheep Gate, there is a pool, which is called in Hebrew (Jewish Aramaic) Bethesda, having five porticoes (alcoves, colonnades).

Then Jesus called out as He taught in the temple, “You know Me and know where I am from; and I have not come on my own initiative [as self-appointed], but He who sent Me is true, and Him you do not know.