Yeremia 22:8

22:8 “‘People from other nations will pass by this city. They will ask one another, “Why has the Lord done such a thing to this great city?”

Yeremia 33:3

33:3 ‘Call on me in prayer and I will answer you. I will show you great and mysterious ¹  things which you still do not know about.’

[33:3]  ¹ tn This passive participle or adjective is normally used to describe cities or walls as “fortified” or “inaccessible.” All the lexicons, however, agree in seeing it used here metaphorically of “secret” or “mysterious” things, things that Jeremiah could not know apart from the Lord’s revelation. G. L. Keown, P. J. Scalise, and T. G. Smothers (Jeremiah 26-52 [WBC], 170) make the interesting observation that the word is used here in a context in which the fortifications of Jerusalem are about to fall to the Babylonians; the fortified things in God’s secret counsel fall through answer to prayer.