。
My parents told me to respect older people.
Literal
Parents [topic-は] me [to-に] older-people [object-を] respect [manner-ように] said.
年寄り (older folks) is more colloquial than the more clinical 老人 — it sits somewhere between 'older folks' and 'old people' in English, with a slightly warmer everyday flavor. ~ように言う frames the directive as reported instruction. 敬う (to respect/revere) is a slightly literary verb suggesting the kind of respect handed down across generations.