Sirach 37:9LXX

7Consult not with him that layeth a snare for thee, and hide thy counsel from them that envy thee.

8Every counsellor giveth out counsel, but there is one that is a counsellor for himself.

9Beware of a counsellor. And know before what need he hath: for he will devise to his own mind:

10Lest he thrust a stake into the ground, and say to thee:

11Thy way is good; and then stand on the other side to see what shall befall thee.