Verses with the word unknown in the Apocrypha (4 verses):

Wisdom of Solomon 11:18
Or unknown wild beasts, full of rage, newly created, breathing out either a fiery vapour, or filthy scents of scattered smoke, or shooting horrible sparkles out of their eyes:

Wisdom of Solomon 18:3
Instead whereof thou gavest them a burning pillar of fire, both to be a guide of the unknown journey, and an harmless sun to entertain them honourably.

2 Maccabees 1:19
For when our fathers were led into Persia, the priests that were then devout took the fire of the altar privily, and hid it in an hollow place of a pit without water, where they kept it sure, so that the place was unknown to all men.

2 Maccabees 2:7
Which when Jeremy perceived, he blamed them, saying, As for that place, it shall be unknown until the time that God gather his people again together, and receive them unto mercy.