なによりもまず
naniyorimo mazu

Expression

1. first and foremost; above all; most importantly of all

なんよりもまず、老人ろうじん親切しんせつにするようにつとめなさい。
naniyorimo mazu rōjinni shinsetsuni suru yōni tsutomenasai.
Above all, try to be kind to the old.
Other forms: