Shared ground
This passage speaks directly to servants in a first-century household setting and assumes a real, unequal social structure. The explicit focus is not on explaining or defending that structure, but on shaping how people within it carry out daily work.
The text makes clear claims about motivation and audience. Obedience and effort are not meant to be performative (“only when watched”) or aimed at winning human approval. The worker’s inner posture (“singleness of heart”) is tied to “fearing the Lord” (Lord), and the work is framed as being done “as for the Lord, not for men.”
It also introduces accountability and hope. There is a promised “reward of the inheritance,” and there is repayment for wrongdoing, with the added claim that God shows no favoritism.
Where interpretation differs (only where needed)
How far “in all things” goes. Some understand “obey in all things” as broadly comprehensive within the job or household role, limited by what is not sinful or harmful. Others read it more straightforwardly as total obedience to the master’s directions, emphasizing the immediate social reality the text addresses.
Who is included in the warning about wrongdoing (v. 25). Some read “the one who does wrong” as still aimed mainly at servants, balancing the promise of reward with a warning. Others take the wording as intentionally open-ended, applying to anyone in the household relationship (servants and masters), especially since the next verse (4:1) addresses masters.
Why the disagreement exists
The phrases are short and general (“in all things,” “the one who does wrong”), and the passage does not spell out boundaries or name specific scenarios. Readers also weigh nearby context differently: the immediate address to servants (3:22–24) versus the broader household section that continues into 4:1.
What this passage clearly contributes
The passage contributes a “two-level” understanding of work and authority: servants have real earthly masters (“according to the flesh”), but their ultimate service is to “the Lord, Christ.” This reframes ordinary labor as morally meaningful beyond human supervision.
It also links future outcome to present conduct: God gives an “inheritance” reward even to those without social inheritance, and God repays wrongdoing impartially. Together, these claims ground both dignity and accountability in God’s judgment rather than social rank.