Good News Translation
Your friend is gone. You can no more get him back than you can get a bird to come back to your hand once you let it go.

New Revised Standard Version
And as you allow a bird to escape from your hand, so you have let your neighbor go, and will not catch him again.

Contemporary English Version
It is gone for good, like a captive bird that has been set free

New American Bible
Like a bird released from your hand, you have let your friend go and cannot recapture him.

Douay-Rheims Bible
But if thou discover his secrets, follow no more after him.

But if thou discover his secrets, follow no more after him.

Sirach 27:17
He that discloseth the secret of a friend loseth his credit, and shall never find a friend to his mind.

Sirach 27:18
Love thy neighbour, and be joined to him with fidelity.

Sirach 27:20
For as a man that destroyeth his friend, so is he that destroyeth the friendship of his neighbour.

Sirach 27:21
And as one that letteth a bird go out of his hand, so hast thou let thy neighbour go, and thou shalt not get him again.