'Unprepared' in the Bible

Sow in righteousness in your own interest, reap in gracious love, break up your own unprepared ground; It is now time to inquire of the LORD, until he comes to pour out righteousness for you.

Lest haply if they of Macedonia come with me, and find you unprepared, we (that we say not, ye) should be ashamed in this same confident boasting.