IVMac7:15 :ܐܘ ܠܣܝܒܘܬܐ ܛܘܒܢܝܬܐ ܘܠܕܘܒܪ̈ܐ ܕܟ̈ܝܐ‏ : O blessed old age and pure behavior
See the entire entry for ˀō interj. vocative interjection