Good News Translation
Throw a stone straight up in the air and it will come down on your head. Strike a blow, and you yourself will be wounded.

New Revised Standard Version
Whoever throws a stone straight up throws it on his own head, and a treacherous blow opens up many wounds.

Contemporary English Version
Striking a friend is the same as throwing a stone straight up in the air-- you will be the one who gets hurt.

New American Bible
A stone falls back on the head of the one who throws it high, and a treacherous blow causes many wounds.

Douay-Rheims Bible
He that winketh with the eye forgeth wicked things, and no man will cast him off:

He that winketh with the eye forgeth wicked things, and no man will cast him off:

Sirach 27:23
Thou canst no more bind him up. And of a curse there is reconciliation:

Sirach 27:24
But to disclose the secrets of a friend, leaveth no hope to an unhappy soul.

Sirach 27:26
In the sight of thy eyes he will sweeten his mouth, and will admire thy words: but at the last he will writhe his mouth, and on thy words he will lay a stumblingblock.

Sirach 27:27
I have hated many things but not like him, and the Lord will hate him.