▁and ▁A . A . ▁Mar am is ) ▁who ▁wanted ▁a ▁church ▁den om ination ▁that ▁was ▁free ▁and ▁separate ▁from ▁the ▁official ▁church ▁institution ▁of ▁the ▁Dutch ▁East - Ind ies ▁( called ▁Protest ant sche ▁K erk ▁in ▁Nederland sch - Ind ie ▁or ▁Ind ische ▁K erk ). ▁In ▁March ▁ 1 9 3 3 , ▁the ▁independent ▁Convention ▁of ▁Protest ant ▁Church es ▁in ▁Min ah asa ▁( K G PM ▁or ▁Ker ap atan ▁G ere ja ▁Protest an ▁Min ah asa ) ▁was ▁established . ▁ ▁In ▁June ▁ 1 9 3 7 , ▁Rat ul ang i ' s ▁book ▁" Ind ones ia ▁in ▁de ▁Pacific " ▁was ▁published . ▁The ▁book ▁was ▁considered ▁to ▁be ▁vision ary ▁in ▁its ▁content , ▁in ▁which ▁Rat ul ang i ▁war ned ▁against ▁the ▁militar isation ▁of ▁Japan ▁and ▁for es aw ▁the ▁possibility ▁that ▁Japan ▁might ▁in va de ▁the ▁Indones ian ▁arch ip el ago ▁because ▁of ▁its ▁natural ▁resources ▁which ▁Japan ▁la cks . ▁He ▁described ▁the ▁leading ▁role ▁that ▁Indones ia ▁and ▁other ▁countries ▁in ▁S out heast ▁Asia ▁around ▁the ▁Pacific ▁R im ▁could ▁play ▁— ▁the ▁Pacific ▁Ocean ▁could ▁equal ▁the ▁Atlantic ▁in ▁importance . ▁ ▁After ▁being ▁released ▁from ▁prison ▁in ▁ 1 9 3 8 , ▁Rat ul ang i ▁became ▁the ▁editor ▁of ▁N ationale ▁Comment aren , ▁a ▁Dutch - language ▁news ▁and ▁issues ▁magazine . ▁He ▁used ▁the ▁magazine ▁to ▁write ▁opinions ▁against ▁the ▁colonial