לְמַ֙עַן֙ תִּשְׂאִ֣י כְלִמָּתֵ֔ךְ וְנִכְלַ֕מְתְּ מִכֹּ֖ל אֲשֶׁ֣ר עָשִׂ֑ית בְּנַחֲמֵ֖ךְ אֹתָֽן׃
כּדי זאָלסט טראָגן דײַן שאַנד, און זיך שעמען פֿאַר אַלץ װאָס דו האָסט געטאָן, אַז דו ביסט זײ געװאָרן אַ טרײסטונג.
Rashi
in that you consoled them when you became more wicked than they, and you gave them an excuse [to neglect righteousness]. Another explanation: in that you consoled them When the evil comes upon you, they will be consoled, saying, We have not suffered alone.