At thy right hand there are pleasures for evermore (Ps. 16: 11)
“A prudent man foreseeth the evil, and hideth himself; But the simple pass on, and are punished”
Proverbs 27:12
We begin with what we might assume to be the common sense side of this. The prudent man checks the weather forecast and takes an umbrella with him. The simple does not, and it is the simple man who is soaking wet. The shrewd businessman has a contingency fund for when a crucial piece of machinery might break down, and the simpleton does not. He does not have the machinery anymore, but he does have a really good excuse.
The Lord told the parable of the wise virgins and the foolish ones. Those who were wise were prepared beforehand, and the foolish ones were living in the moment (Matt. 25:1-13).
But if the wise are those who look ahead, and anticipate the things that might happen, one of the other things they must do is look at the entirety of Scripture. This enables them to prepare beforehand through knowing that they are situations where you should not prepare beforehand.
“And he called unto him the twelve, and began to send them forth by two and two; and gave them power over unclean spirits; And commanded them that they should take nothing for their journey, save a staff only; no scrip, no bread, no money in their purse: But be shod with sandals; and not put on two coats” (Mark 6:7–9).
And then there is this scenario.
“But when they shall lead you, and deliver you up, take no thought beforehand what ye shall speak, neither do ye premeditate: but whatsoever shall be given you in that hour, that speak ye: for it is not ye that speak, but the Holy Ghost” (Mark 13:11).
There are times, in short, when the best preparation means knowing that you must speak without notes.