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Inasmuch as love of worldly goods and a desire to protect one's family may lead a person to transgression (and, thus, to a betrayal of the moral values postulated in God's message), they are described as fitnah - which, in this context, is best rendered by the two words "trial and temptation". This reminder connects with verse {25} above, "beware of that temptation to evil which does not befall only those who are bent on denying the truth," since it is acquisitiveness and a desire to confer benefits on one's own family which often tempt an otherwise good person to offend against the rights of his fellow-men. It is to be borne in mind that, contrary to the New Testament, the Our'an does not postulate a contempt for worldly attachments as a pre-requisite of righteousness: it only demands of man that he should not allow these attachments to deflect him from the pursuit of moral verities.
A big family-many sons-was considered a source of power and strength: iii. 10, 116. So in English, a man with many children is said to have his "quiver full": Cf. Psalms, cxxvii. 4-5: "As arrows are in the hands of a mighty man, so are the children of thy youth. Happy is the man that hath his quiver full of them; they shall not be ashamed, but they shall speak with the enemies in the gate." So with property and possessions: they add to a man's dignity, power, and influence. But both possessions and a large family are a temptation and a trial. They may turn out to be a source of spiritual downfall, if they are mishandled, or if the love of them excludes the love of Allah.