IITim3:14 :ܐܲܢܼܬ݁ ܕܸ݁ܝܢ ܩܲܘܵܐ ܒ݁ܲܐܝܠܸܝܢ ܕܼ݁ܝܠܸܦ݂ܬ݁ ܘܸܐܫܬ݁ܲܪܲܪܬ݁‏ : as for you, continue in what you have learned and firmly believe
See the entire entry for šrr vb. to be firm, true