OS LkCur17:1 :ܠܐ ܡܫܟܚܐ ܕܠܐ ܢܐܬܘܢ ܡܟܫ̈ܘܠܐ ܒܪܡ ܘܝ ܠܗܘ ܕܒܐܝܕܗ ܢܐܬܘܢ‏ : it is impossible for stumbling blocks not to come, but woe to the one through whom they come
See the entire entry for bram conj. but, however