Commentaries
8:13-18 The yearly lamenting for Tammuz was attended with infamous practices; and the worshippers of the sun here described, are supposed to have been priests. The Lord appeals to the prophet concerning the heinousness of the crime; and lo, they put the branch to their nose, denoting some custom used by idolaters in honour of the idols they served. The more we examine human nature and our own hearts, the more abominations we shall discover; and the longer the believer searches himself, the more he will humble himself before God, and the more will he value the fountain open for sin, and seek to wash therein.
17. put … branch to … nose—proverbial, for "they turn up the nose in scorn," expressing their insolent security [Septuagint]. Not content with outraging "with their violence" the second table of the law, namely, that of duty towards one's neighbor, "they have returned" (that is, they turn back afresh) to provoke Me by violations of the first table [Calvin]. Rather, they held up a branch or bundle of tamarisk (called barsom) to their nose at daybreak, while singing hymns to the rising sun [Strabo, 1.15, p. 733]. Sacred trees were frequent symbols in idol-worship. Calvin translates, "to their own ruin," literally, "to their nose," that is, with the effect of rousing My anger (of which the Hebrew is "nose") to their ruin.