Waoo I'm so intrested in this your question I believe slot are going to learn here first I will love to answer it in ascending order just to give a full understanding of it the way I understand it..
Understanding, firstly I will like to explain what it means by understanding in it simple form is a psychological concept in relating to an obstacle that is getting use to how things is being done..
Knowledge : their are not much different from each other as Knowledge is a familiarity, awareness, or understanding of someone or something, such as facts
Lastly which is wisdom the Bible called is the principal thing to me I agree with it because it carry both the understanding and knowledge..
And why is wisdom or sagacity sound so important because is the ability to think and take a reasonable action using understanding and knowledge that is the mostly reason when you see people with wisdom you like it when their talk
In conclusion I will like to say it that Wisdom is the master of because of the position it stand and it carry all the other listed below to carryout it action
i also agree with you that wisdomis the ability to think and take a reasonable action using understanding and knowledge and most especially the perfect timing to take those actions
Waoo this is an interesting contribution from you and I'm really gland to heard some vital information to that will really help me from you own point
As you say wisdom is the principal thing ,I can now see why is called the principal thing just becaise is the master of all and it carries all the our part alone with him
Understanding and knowledge are so useful in the part of wisdom because those are the weapon she uses before taking are fina decision
That is the most reason why a person with sagacity must really be appreciated because their are reare and can not be found everywhere