Dishonest partiality leads men who have enslaved themselves to it to transgress, even when the inducement is altogether disproportionate. A "piece of bread" was proverbial at all times as the most extreme point of poverty (compare the marginal reference).

To have respect of persons [is] not good: for for a piece of (k) bread [that] man will transgress.
(k) He will be abused for nothing.

To have respect of persons is not good, &c. In courts of judicature, to give a cause or pass sentence in favour of a person, because he is rich, or is a relation, a friend, an acquaintance, or has done a kindness; and against another, because of the reverse, Leviticus 19:15; nor in religious assemblies, making a difference between the rich and the poor, James 2:1; this is not good in itself, nor productive of good effects, and cannot be well pleasing to God, who himself is no respecter of persons;
for for a piece of bread that man will transgress; the laws of God and men; having used himself to such unrighteous methods of proceeding, he will do any base action for a small gain, he will stick at nothing, and do it for anything; as Cato used to say of M. Coelius the tribune,
"that he might be hired, for a morsel of bread, to speak or hold his peace;''
see Ezekiel 13:19.

Judgment is perverted, when any thing but pure right is considered.

respect of persons-- (Proverbs 24:23). Such are led to evil by the slightest motive.

With a proverb, in the first half of which is repeated the beginning of the second appendix, Proverbs 24:23, a new group commences:
21 Respect of persons is not good;
And for a morsel of bread a man may become a transgressor.
Line first refers to the administration of justice, and line second - the special generalized - to social life generally. The "morsel of bread," as example of a bribe by means of which the favour of the judge is purchased, is too low a conception. Hitzig well: "even a trifle, a morsel of bread (1-Samuel 2:36), may, as it awakens favour and dislike within us, thus in general call forth in the will an inclination tending to draw one aside from the line of strict rectitude." Geier compares A Gellius' Noct. Att. i. 15, where Cato says of the Tribune Coelius: Frusto panis conduci potest vel ut taceat vel ut loquatur.

For - When a man hath once accustomed himself to take bribes, a very small advantage will make him sell justice.