The mitsvah of vidui combines clarity and continuing confusion. We all are familiar with the need to verbally confess our sins as part of the process of repentance. In order to achieve full atonement, or to start that process, the sinner must address God, admitting his sins, regretting them, and undertaking not to repeat them in the future. That requirement, Rambam takes pains to emphasize, applies to all sins, and in all places. We might have thought otherwise because the Torah mentions vidui most prominently as part of the process of offering sacrifices. We might therefore think that vidui only figures in sacrifice atonement, but that atonement for other sins, both more and less serious than those for which a sacrifice may be offered, do not need that confession. We might also have thought that the relationship with God that we have in the Land of Israel differs sufficiently from that outside the Land that vidui would either not be relevant or not work for those in exile. Rambam therefore cites the sections of the Mekhilta that explicitly include all of these situations in the vidui-requirement.

One more clear point about vidui is that it does not always effectuate complete atonement. The gemara in Massekhet Yoma 86a defines four types of atonement needs. Someone who neglects to fulfill a positive commandment of the Torah must, unless there are other exacerbating factors, only sincerely repent of that failure and will be immediately forgiven. Someone who violates an ordinary Torah prohibition (eating pig) must repent and then wait for Yom haKippurim, which completes his atonement. Someone who transgresses a sin for which the punishment is death or karet needs teshuvah (with vidui), Yom haKippurim, and yisurim, moments of suffering, to fully erase the sin. Last, those who desecrate the Name of God (a category that deserves a discussion of its own), must, in addition to the above, maintain their penitent state until the day of their death; only then is the sin fully wiped away.

Despite the general clarity, details such as what the mitsvah actually entails are not so clear. Rambam here and in the first words of Hilkhot Teshuvah (in paraphrase, if a person sins and repents, it is a mitsvah for that person to confess the sin verbally) refers to vidui as the mitsvah, not the teshuvah itself. Indeed, Minhat Hinukh in Mitsvah 364 assumes that Rambam agrees that teshuvah is necessary for atonement, but that there is no specific obligation to seek such atonement. The mitsvah is only for one who is repenting; such a person must verbally confess. That clearly is not the view of other major authorities, such as Rabbenu Yonah in Sha`arei Teshuvah, who thinks there is a general obligation to repent as soon as one is able, as well as a specific obligation to repent and confess on Yom haKippurim.

As the Rov ztllh"h and others point out, that is not necessarily the view of Rambam either. In the koteret of Hilkhot Teshuvah, the heading in which Rambam lists the mitsvot he will discuss in that section, Rambam lists one mitsvah, that a sinner repent from his sin and confess. That locution seems to agree with Rabbenu Yonah that there is a mitsvah to repent, leaving the question as to why Rambam expressed himself as he did in the text. The Rov's answer, important both for this and other mitsvot, was that in the Mishneh Torah Rambam describes the ma`aseh hamitsvah, the act of mitsvah, that gives an external expression to a largely internal mitsvah. Here it is vidui. In mourning, for one other example, sitting shiva is the act of mourning, but the mitsvah includes the internal feelings of mourning.

The presentation in the Sefer haMitsvot suggests another element to the answer. Rambam spends more time on this mitsvah than most others, and the bulk of his discussion involves proving the range of the applicability of vidui. His concern, then, seems to have been emphasizing the broad applicability of vidui rather than separating it from the process of teshuvah. In other words, Rambam might have stressed vidui not because it was the only part that was obligatory, but because it was the only element of the process that we might not have realized was absolutely necessary.

In the course of his discussion, Minhat Hinukh points out that the gemara elsewhere assumes that one can effectuate certain parts of atonement even without vidui. A kiddushin performed on the condition that the man is a tsaddik, wholly righteous, is valid, since even an evildoer may have repented in his thoughts. From there, Minhat Hinukh suggests that even completely internal teshuvah takes effect; it is only full atonement that requires vidui.

Those two pieces of information, that vidui was the element of the process Rambam needed to emphasize and that teshuvah without vidui seems to have at least partial effect, focus our attention on why it is in fact necessary. We can approach that question either by distinguishing between restoring one’s righteousness and atonement, or by analyzing the value of verbal articulation. Let’s try both. Treating a person as righteous makes a statement about what we think of them right now. At this moment in time, person X is or is not righteous, s/he is or is not committed, now and in the future, to fulfilling God’s law.

Atonement means that the blot of the past has been wiped away completely, meaning vidui provides the mechanism to expunge one’s past record. It brings a person fully in confrontation with his past and allows him/her to reject it, to declare it irrelevant (except as a memory that will fortify one’s commitment to the path of goodness) to who his future will be. That talking is necessary for confronting the past is something that psychologists have known for a while now; the halakhot of vidui may indicate that halakhah realized it long ago. Shabbat Shalom.