Ben Sira 12:12

12 Seat an enemy at your right hand, and the next thing you know he'll be trying to get your own place of honor. Put him next to you, and he will overthrow you. Then you will realize the truth of my words, and be stung with regret when you remember them.

Ben Sira 12:12 In-Context

10 Never trust an enemy; his wickedness is as destructive as rust.

11 Watch out, and be on guard against him, even if he acts ever so humble. He is like a metal mirror that rusts away if you don't keep it polished.

12 Seat an enemy at your right hand, and the next thing you know he'll be trying to get your own place of honor. Put him next to you, and he will overthrow you. Then you will realize the truth of my words, and be stung with regret when you remember them.

13 Nobody feels sorry for snake charmers or wild animal tamers who get bitten,

14 and nobody will feel sorry for you if you run around with sinners and get involved in their wrongdoing.