us - serv us ▁- ▁master - serv ant ▁( in ▁older ▁translation : ▁slave ) ▁and ▁God - s oul . ▁The ▁Bible ▁often ▁equ ates ▁worship ing ▁multiple ▁gods , ▁i . e . ▁id ol at ry ▁to ▁for nic ation . ▁August ine ▁rel ates ▁to ▁that : ▁" On ▁this ▁account ▁there ▁is ▁no ▁True ▁God ▁of ▁sou ls , ▁save ▁One : ▁but ▁one ▁soul ▁by ▁means ▁of ▁many ▁false ▁gods ▁may ▁commit ▁for nic ation , ▁but ▁not ▁be ▁made ▁fruit ful ." ▁ ▁As ▁trib al ▁populations ▁grew , ▁fert ility ▁was ▁no ▁longer ▁a ▁valid ▁just ification ▁of ▁pol yg amy : ▁it ▁" was ▁law ful ▁among ▁the ▁ancient ▁f athers : ▁whether ▁it ▁be ▁law ful ▁now ▁also , ▁I ▁would ▁not ▁hast ily ▁pron ounce ▁( ut rum ▁et ▁n unc ▁fas ▁sit , ▁non ▁tem ere ▁dix er im ). ▁For ▁there ▁is ▁not ▁now ▁necessity ▁of ▁be getting ▁children , ▁as ▁there ▁then ▁was , ▁when , ▁even ▁when ▁w ives ▁bear ▁children , ▁it ▁was ▁allowed , ▁in ▁order ▁to ▁a ▁more ▁numerous ▁poster ity , ▁to ▁marry ▁other ▁w ives ▁in ▁addition , ▁which ▁now ▁is ▁certainly ▁not ▁law ful ." ▁ ▁August ine ▁saw ▁marriage ▁as ▁a ▁c oven ant ▁between ▁one ▁man ▁and ▁one ▁woman , ▁which ▁may ▁not ▁be ▁broken . ▁It ▁was ▁the ▁Cre ator ▁who ▁established ▁mon og amy : ▁" There fore , ▁the ▁first ▁natural ▁bond ▁of ▁human ▁society ▁is