No one is born knowing everything, no one is born wise. For those who come into the world with a birth predisposition, in a state of spiritual pre-enlightenment, wisdom is a spiritual gift that is received in adult life through Gnosis, the spiritual birth.
The Bible tells us that many prophets, including John the Baptist and Joseph the son of Jacob in Genesis, came into the world with a spiritual predisposition for the grace of God. For example, the Sacred Scriptures describe to us the special conception of the prophet Jeremiah: "Before I formed you in the womb I knew you, before you were born I set you apart; I appointed you as a prophet to the nations" Jeremiah 1:5. Some people are upright and God-fearing but never become wise, and this is because there is an intermediate state between good and evil dominated by emotions.
But the master of wisdom Ben Sira wrote his teachings for other sages like him, but besides, being wisdom the most desirable spiritual food, all of us regardless of our condition, we must make the maximum effort to reach it; that's why he gives us a series of tips to obtain this spiritual good that reveals the hidden of God (his providence) and the mysteries of the universe.
Like a hidden treasure, to obtain the perfection of wisdom, the gifts of perseverance, firmness, and progressiveness are required, wisdom is a spiritual search; and its fruits, related with eternal life or contemplative activity, although they are very sweet, take time to bear fruit, says the Master of Wisdom:
"My child, from your youth choose discipline;
and when you have gray hair you will find wisdom.
As though plowing and sowing, draw close to her;
then wait for the bountiful crops.
For in cultivating her you will work but little,
and soon you will eat her fruit" Ben Sira 6:18-19.
Wisdom, on the other hand, is foolishness to the fool who follows his own whims:
"She is rough ground to the fool!
The stupid cannot abide her.
She will be like a burdensome stone to them,
and they will not delay in casting her aside" Ben Sira 6:20-21
The gift of wisdom is finally a gift that God grants to a few to perfect creation:
"For discipline is like her name,
she is not accessible to many" Ben Sira 6:22.