The word meticulous means to be characterized by very precise, conscientious attention to details. It is synonymous with being careful, precise, painstaking, rigorous and scrupulous. There is an art (or science) to executing any action.
I do not know the S.I unit for measuring faith, but I do know that faith as small as mustard seeds can move mountains as big as Everest.
What happens when someone has faith, small as a grain of rice or bigger than Mount Everest, but refuses to apply the said faith in his everyday life?