We were instructed to pack all our belongings in the boxes that were provided by your company as well as bubble wrap all furniture as per the instructions.

instructed 是动词 instruct 的过去分词形式，在句中表示被动语态。instruct 由前缀 in-（表示"向内"）和词根 struct（"建造、构造"）组成，本意是"在内部构建知识"，引申为"指导、指示"的意思。这里表示"被指示/被要求"做某事。