Avodas Kodesh that is tehorah (pure) and tamimah (unblemished) before Elohim HaAv is this: to visit yetomim (orphans) and almanot (widows) in their tzoros and to be shomer against the defilement of the Olam Hazeh. [DEVARIM 14:29; IYOV 31:16,17,21; TEHILLIM 146:9; YESHAYAH 1:17,23]