Isaias Giya ed Pan-research na Saray Tasi nen Jehova—2019 ya Edisyon 30:21 Say Panag-bantayan (Panaralan),11/2022, p. 10-11 Say Panag-bantayan,11/1/2005, p. 239/1/2004, p. 17-182/15/2003, p. 315/15/1999, p. 17-185/1/1996, p. 23 Say Panag-bantayan, 5/1/2002, p. 25-26
30:21 Say Panag-bantayan (Panaralan),11/2022, p. 10-11 Say Panag-bantayan,11/1/2005, p. 239/1/2004, p. 17-182/15/2003, p. 315/15/1999, p. 17-185/1/1996, p. 23 Say Panag-bantayan, 5/1/2002, p. 25-26