What This Chapter Is About
The chapter addresses discernment in giving and helping. Do good to the righteous, not to the ungodly, lest you arm your own enemy. A friend is known in adversity; an enemy's humility is a disguise. Do not trust a former enemy even when he humbles himself, for his malice is merely waiting for opportunity. The chapter uses vivid animal imagery -- iron rusting, the snake charmer -- to illustrate the persistence of concealed hostility.
What Makes This Chapter Remarkable
This chapter stands in stark tension with Jesus' teaching to love enemies (Matthew 5:44). Ben Sira represents the older wisdom tradition of moral realism, where indiscriminate giving is considered foolish rather than generous. The distinction between the worthy and unworthy recipient was standard in Jewish and Greco-Roman ethics alike.
Translation Friction
The explicit instruction to withhold good from the sinner (vv. 4-7) challenges the universal mercy ethic of the New Testament. The teaching was debated in early Christianity: does wisdom's caution override love's generosity? Augustine attempted to harmonize the two by distinguishing the person (always to be loved) from the sin (never to be aided).