Sirach 37:3-5

New Revised Standard Version, Anglicised

³ O inclination to evil, why were you formed
    to cover the land with deceit?
⁴ Some companions rejoice in the happiness of a friend,
    but in time of trouble they are against him.
⁵ Some companions help a friend for their stomachs’ sake,
    yet in battle they will carry his shield.