Isaiah 8:13
Isaiah 8:1313The LORD of Hosts is the One you shall regard as holy. Only He should be feared; only He should be dreaded.
— "Jehovah of armies, he is the One you should regard as holy" — is read by the Watchtower as a clear command to sanctify Jehovah, the Father, in the heart. The JW reading does not engage 's New Testament citation, where the same command is applied to Christ.
's command to "regard as holy" Jehovah of armies is quoted by Peter at — and Peter applies it directly to Christ: "but sanctify the Christ as Lord in your hearts." The sanctifying-Jehovah-in-the-heart command of becomes, in apostolic application, the sanctifying-Christ-as-Lord command of . The transposition is not loose — it is one of the New Testament's clearest applications of an Old Testament Jehovah-text to Jesus. The NWT's selective Tetragrammaton- insertion practice is most exposed here: the NWT does not insert "Jehovah" at (where it would identify Jesus as Jehovah), even though the verse echoes . Pair with (where 's "calling on Jehovah" is applied to calling on Jesus, but the NWT inserts "Jehovah" because the surrounding context is ambiguous) for the documented selectivity pattern.