Good News Translation
A wise person's knowledge is like a river that never runs dry, like an everflowing stream of good advice.

New Revised Standard Version
The knowledge of the wise will increase like a flood, and their counsel like a life-giving spring.

Contemporary English Version
The knowledge of the wise is an overflowing river, and their advice is a life-giving spring.

New American Bible
The knowledge of the wise wells up like a flood, and their counsel like a living spring.

Douay-Rheims Bible
The perfection of the fear of God is wisdom and understanding.

The perfection of the fear of God is wisdom and understanding.

Sirach 21:11
The way of sinners is made plain with stones, and in their end is hell, and darkness, and pains.

Sirach 21:12
He that keepeth justice shall get the understanding thereof.

Sirach 21:14
He that is not wise in good, will not be taught.

Sirach 21:15
But there is a wisdom that aboundeth in evil: and there is no understanding where there is bitterness.