Acceptable and Blemished Sacrificial Animals
This is a clean canonical chain: Torah defines acceptable/unblemished sacrifice → Malachi condemns Israel for violating it → Peter and Hebrews deliberately apply “without blemish” language to Christ.
Where this fits in the story: Sacrificial animals “without blemish” appear throughout Leviticus 1–7.
Where Scripture takes it next: 1 Peter 1:18–21 — Very Strong: Christ is described as a lamb “without blemish and without spot,” directly reusing sacrificial acceptability vocabulary.