奉為圭臬

to take as a guiding principle (idiom)

to offer (tribute) / to present respectfully (to superior, ancestor, deity etc) / to esteem / to revere / to believe in (a religion) / to wait upon / to accept orders (from superior)

as (in the capacity of) / to take sth as / to act as / to serve as / to behave as / to become / to be / to do / by (in the passive voice)

because of / for / to

(old) jade tablet (a ceremonial badge of rank)

guidepost / rule / standard / limit / target (old)