Sirach 6:8-10

Revised Standard Version

⁸ For there is a friend who is such at his own convenience,
    but will not stand by you in your day of trouble.
⁹ And there is a friend who changes into an enemy,
    and will disclose a quarrel to your disgrace.
¹⁰ And there is a friend who is a table companion,
    but will not stand by you in your day of trouble.