に従わなければ

must follow

→ に
phrase Rare #38,736
must follow Usually followed by ならない or なりません to express obligation: に従わなければならない means “must follow” or “must obey.” The noun before に indicates what must be followed, such as rules or laws.
JA: 会社の規則に従わなければなりません。
EN: You must follow the company rules.