Jeremiah now speaks in Jeremiah 5:3–6 and reports back to the Lord what he has observed in Jerusalem. This does not necessarily mean that he has literally walked the streets and squares of the city. Jeremiah has a daily experience of what Jerusalem is like and can respond to the Lord’s instruction to search the city (Jeremiah 5:1) from that experience.1
As he speaks to the Lord, Jeremiah says, O Lord, do not your eyes look for truth?
Reference to the Lord’s eyes is an anthropomorphism for the Lord himself closely searching his people (see Jeremiah 32:9; 2 Chronicles 16:9; Psalm 11:4).2 Jeremiah is expressing the fact that what the Lord desires from his people is covenant faithfulness. You could say that the Lord has eyes only for faithfulness from his people. But the search for it among the people of Jerusalem by both the Lord and his prophet has been fruitless.
3 O LORD, do not your eyes look for truth? You have struck them down, but they felt no anguish; you have consumed them, but they refused to take correction. They have made their faces harder than rock; they have refused to repent.