Shared ground
Deuteronomy 17:1 assumes sacrifice is a normal part of Israel’s worship and then narrows what counts as an acceptable gift. The explicit claim is simple: an ox or sheep with a blemish must not be offered to Yahweh, and the prohibition extends to “anything bad/evil” presented as a sacrifice.
The verse also makes a strong value statement about worship: bringing a defective or otherwise “bad” offering is not treated as a minor mistake or a cheaper substitute. It is labeled “an abomination” to Yahweh your God (Deuteronomy 17:1). Whatever else “abomination” can mean elsewhere, here it marks the act as decisively unacceptable.
Where interpretation differs (only where needed)
Two main questions come up.
First, what does “anything bad/evil” add? Some read it as basically a restatement of “blemish,” broadening “defect” to include any disqualifying physical condition (injury, disease, weakness, deformity). Others think it reaches beyond physical defects to include any way of gaming the system—bringing an animal that is technically alive but obviously unfit, or offering something acquired or handled in a wrong way.
Second, how should “abomination” be understood here? Some take it primarily as a worship category: it violates the standards for what can be brought near to Yahweh in sacrifice. Others hear a moral edge as well: the offering expresses contempt, because it treats Yahweh as worthy of leftovers.
Why the disagreement exists
The verse is brief, and “anything bad/evil” is not itemized. Also, “abomination” can function in more than one way across the Bible, sometimes focusing on unacceptable worship practices and other times on broader moral offenses. Because this verse links an offering’s condition with a strong verdict (“abomination”), readers differ on how much moral intent is implied versus ritual unacceptability.
What this passage clearly contributes
It draws a sharp boundary around acceptable worship gifts: sacrifice is not just about performing the act but about the integrity and fitness of what is offered. It also ties worship practice to loyalty in a larger section concerned with public faithfulness and serious unfaithfulness (Deuteronomy 17:2), suggesting that how Israel worships and how Israel stays faithful are connected, not separate topics.