Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
ordain [ɔːˈdeɪn] vt (REL) посвяща́ть (посвяти́ть*perf) в сан (decide) предпи́сывать (предписа́ть*perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.