When it is recorded in the Bible that “wisdom is the principal thing”, let’s ask ourselves what the word “principal” actually means… Principal is first in order of importance or main.
It is safe to say that wisdom is the most important virtue on earth and you would find that every problem on earth has its final root cause in wisdom; hence every problem is a wisdom problem. For example, a couple that hardly gets along, trace it to the root; one person does not want to compromise for the other and this is a wisdom problem.
Wisdom can be acquired by observation, by reading books, by travelling, by being mentored. All of these sources of wisdom are fantastic, but the Bible is still the greatest and most reliable source of wisdom for it is the mind of God about any situation or circumstance and it is never obsolete.