אָ֣ז יִ֭קְרָאֻנְנִי וְלֹ֣א אֶֽעֱנֶ֑ה יְ֝שַׁחֲרֻ֗נְנִי וְלֹ֣א יִמְצָאֻֽנְנִי׃
Then will they call me, but I will not answer, they will seek me earnestly, but they shall not find me.
Read midrashic interpretation of Proverbs 1:28: and classical rabbinic exegesis.