Isaiah 1:16

The first three run thus: "Wash, clean yourselves; put away the badness of your doings from the range of my eyes; cease to do evil." This is not only an advance from figurative language to the most literal, but there is also an advance in what is said. The first admonition requires, primarily and above all, purification from the sins committed, by means of forgiveness sought for and obtained. Wash: rachatzu, from râchatz, in the frequent middle sense of washing one's self. Clean yourselves: hizdaccu, with the tone upon the last syllable, is not the niphal of zâkak, as the first plur. imper. niph. of such verbs has generally and naturally the tone upon the penultimate (see Isa 52:11; Num 17:10), but the hithpael of zacah for hizdaccu, with the preformative Tav resolved into the first radical letter, as is very common in the hithpael (Ges. 54, 2, b). According to the difference between the two synonyms (to wash one's self, to clean one's self), the former must be understood as referring to the one great act of repentance on the part of a man who is turning to God, the latter to the daily repentance of one who has so turned. The second admonition requires them to place themselves in the light of the divine countenance, and put away the evil of their doings, which was intolerable to pure eyes (Hab 1:13). They were to wrestle against the wickedness to which their actual sin had grown, until at length it entirely disappeared. Neged, according to its radical meaning, signifies prominence (compare the Arabic ne‛gd, high land which is visible at a great distance), conspicuousness, so that minneged is really equivalent to ex apparentia.

Though God had rejected their services as insufficient to atone for their sins while they persisted in them, yet he does not reject them as in a hopeless condition, but here calls upon them to forsake their sins, which hindered the acceptance of their services, and then all would be well. Let them not say that God picked quarrels with them; no, he proposes a method of reconciliation. Observe here, I. A call to repentance and reformation: "If you would have your sacrifices accepted, and your prayers answered, you must begin your work at the right end: Be converted to my law" (so the Chaldee begins this exhortation), "make conscience of second-table duties, else expect not to be accepted in the acts of your devotion." As justice and charity will never atone for atheism and profaneness, so prayers and sacrifices will never atone for fraud and oppression; for righteousness towards men is as much a branch of pure religion as religion towards God is a branch of universal righteousness. 1. They must cease to do evil, must do no more wrong, shed no more innocent blood. This is the meaning of washing themselves and making themselves clean, Isa 1:16. It is not only sorrowing for the sin they had committed, but breaking off the practice of it for the future, and mortifying all those vicious affections and dispositions which inclined them to it. Sin is defiling to the soul. Our business is to wash ourselves from it by repenting of it and turning from it to God. We must put away not only that evil of our doings which is before the eye of the world, by refraining from the gross acts of sin, but that which is before God's eyes, the roots and habits of sin, that are in our hearts; these must be crushed and mortified. 2. They must learn to do well. This was necessary to the completing o…

1:16 Wash . . . and be clean! The people were defiled by their sin and the uncleanness of their sacrifices. To be clean in God’s eyes, they needed to change their behavior, get rid of their sins, and give up their evil ways (see also 1:18).