[Latin] nisi Dominus frustra [Notes] That is, "everything is in vain without God". Summarized from Psalm 127 (126 Vulgate), "nisi Dominus aedificaverit domum in vanum laboraverunt qui aedificant eam nisi Dominus custodierit civitatem frustra vigilavit qui custodit" (unless the Lord builds the house, they work on a useless thing who build it; unless the Lord guards the community, he keeps watch in vain who guards it). Motto of Edinburgh, St Thomas School, Kolkata, Union Secondary School Awkunanaw, Enugu and St. Stephen's Episcopal School. [Translation] 
if not the Lord, [it is] in vain