Jesaja 1:17

Five admonitions relating to the practice of what is good: "Learn to do good, attend to judgment, set the oppressor right, do justice to the orphan, conduct the cause of the widow." The first admonition lays the foundation for the rest. They were to learn to do good - a difficult art, in which a man does not become proficient merely by good intentions. "Learn to do good:" hetib is the object to limdu (learn), regarded as an accusative; the inf. abs. הרע in Isa 1:16 takes the place of the object in just the same manner. The division of this primary admonition into four minor ones relating to the administration of justice, may be explained from the circumstance that no other prophet directs so keen an eye upon the state and its judicial proceedings as Isaiah has done. He differs in this respect from his younger contemporary Micah, whose prophecies are generally more ethical in their nature, whilst those of Isaiah have a political character throughout. Hence the admonitions: "Give diligent attention to judgment" (dârash, to devote one's self to a thing with zeal and assiduity); and "bring the oppressor to the right way." This is the true rendering, as Châmotz (from Châmatz, to be sharp in flavour, glaring in appearance, violent and impetuous in character) cannot well mean "the oppressed," or the man who is deprived of his rights, as most of the early translators have rendered it, since this form of the noun, especially with an immutable kametz like בּגוד בּגודה (cf., נקד נקּדּה), is not used in a passive, but in an active or attributive sense (Ewald, 152, b: vid., at Psa 137:8): it has therefore the same meaning as Chomeotz in Psa 71:4, and âshok in Jer 22:3, which is similar in its form. But if Châmotz signifies the oppressive, reckless, churlish man, אשּׁר cannot me…

The first verse of this chapter is intended for a title to the whole book, and it is probable that this was the first sermon that this prophet was appointed to publish and to affix in writing (as Calvin thinks the custom of the prophets was) to the door of the temple, as with us proclamations are fixed to public places, that all might read them (Hab 2:2), and those that would might take out authentic copies of them, the original being, after some time, laid up by the priests among the records of the temple. The sermon which is contained in this chapter has in it, I. A high charge exhibited, in God's name, against the Jewish church and nation, 1. For their ingratitude (Isa 1:2, Isa 1:3). 2. For their incorrigibleness (Isa 1:5). 3. For the universal corruption and degeneracy of the people (Isa 1:4, Isa 1:6, Isa 1:21, Isa 1:22). 4. For the perversion of justice by their rulers (Isa 1:23). II. A sad complaint of the judgments of God, which they had brought upon themselves by their sins, and by which they were brought almost to utter ruin (Isa 1:7-9). III. A just rejection of those shows and shadows of religion which they kept up among them, notwithstanding this general defection and apostasy (Isa 1:10-15). IV. An earnest call to repentance and reformation, setting before them life and death, life if they compiled with the call and death if they did not (Isa 1:16-20). V. A threatening of ruin to those that would not be reformed (Isa 1:24, Isa 1:28-31). VI. A promise of a happy reformation at last, and a return to their primitive purity and prosperity (Isa 1:25-27). And all this is to be applied by us, not only to the communities we are members of, in their public interests, but to the state of our own souls.

1:17 Seeking justice means upholding God’s standards of fairness and advancing the rights of the oppressed, orphans, and widows—those who are weak and marginalized in society (see also Jer 7:5-7; 22:3; Zech 7:10; Matt 23:23; 25:31-46; Jas 1:27).