, ▁but ▁merely ▁a ▁pro clam ation ▁announ cing ▁the ▁Spe aker . ▁ ▁In ▁ 1 9 8 0 , ▁in ▁the ▁case ▁of ▁Stone ▁v . ▁Graham , ▁the ▁Supreme ▁Court ▁of ▁the ▁United ▁States ▁held ▁un const itution al ▁a ▁Kentucky ▁stat ute ▁that ▁required ▁posting ▁the ▁Ten ▁Command ments ▁on ▁the ▁wall ▁of ▁each ▁public ▁class room ▁in ▁the ▁state . ▁ ▁The ▁Court ▁noted ▁that ▁some ▁of ▁the ▁Command ments ▁apply ▁to ▁arg u ably ▁sec ular ▁matters , ▁such ▁those ▁at ▁ ▁( 2 0 : 1 2 – 1 7 ▁in ▁the ▁N J PS ) ▁and ▁ ▁( 5 : 1 6 – 2 1 ▁in ▁the ▁N J PS ), ▁on ▁hon oring ▁one ' s ▁parents , ▁murder , ▁ad ul tery , ▁ste aling , ▁false ▁witness , ▁and ▁cov et ous ness . ▁But ▁the ▁Court ▁also ▁observed ▁that ▁the ▁first ▁part ▁of ▁the ▁Command ments , ▁in ▁ ▁( 2 0 : 1 – 1 1 ▁in ▁the ▁N J PS ) ▁and ▁ ▁( 5 : 6 – 1 5 ▁in ▁the ▁N J PS ), ▁concerns ▁the ▁religious ▁duties ▁of ▁bel ie vers : ▁wor sh ipping ▁the ▁Lord ▁God ▁alone , ▁avoid ing ▁id ol at ry , ▁not ▁using ▁the ▁Lord ' s ▁name ▁in ▁vain , ▁and ▁obser ving ▁the ▁S abb ath ▁Day . ▁ ▁Thus ▁the ▁Court ▁concluded ▁that ▁the ▁pre - em inent ▁purpose ▁for ▁posting ▁the ▁Ten ▁Command ments ▁on ▁school