AphDem14.258:6 :ܐܘܢ ܡܠܟܐ ܕܥܠܡ̈ܐ ܣܓܕܝܢ ܚܢܢ ܠܟ܂ ܕܢܓܝܪܐ ܗܝ ܪܘܚܟ ܥܡ ܟܠܗ݀ ܒܪܝܬܟ‏ : Oh king of the world, we worship you, for your spirit is patient with all your creation
See the entire entry for ˀōn interj. Oh!