The Watchtower Society's (Jehovah's Witnesses) New World Translation Bible often doesn't agree with its own Kingdom Interlinear. The King James Version text also is included. Let the evidence speak for itself.
KJV - King James Version.
NWT - New World Translation (2013 revision).
Kingdom Interlinear - Watchtower Society's Greek source (Wescott & Hort, 1881).
John 8: 58 (KJV) Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am.
John 8: 58 (NWT) Jesus said to them: “Most truly I say to you, before Abraham came into existence, I have been.”
John 8: 58 (Kingdom Interlinear) Said to them Jesus Amen amen I am saying to YOU Before Abraham to become I am.
John 8: 58 (Kingdom Interlinear) εἶπεν Said αὐτοῖς to them Ἰησοῦς Jesus ᾿Αμὴν Amen ἀμὴν amen λέγω I am saying ὑμῖν, to YOU πρὶν Before ᾿Αβραὰμ Abraham γενέσθαι to become ἐγὼ I εἰμί. am.
Revelation 14: 12,13 (KJV) Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus. 13 And I heard a voice from heaven saying unto me, Write, Blessed are the dead which die in the Lord from henceforth: Yea, saith the Spirit, that they may rest from their labours; and their works do follow them
Revelation 14: 12,13 (NWT) Here is where it calls for endurance on the part of the holy ones, those who keep the commandments of God and hold fast to the faith of Jesus.” 13 And I heard a voice out of heaven say, “Write: Happy are the dead who die in union with the Lord from this time onward. Yes, says the spirit, let them rest from their labors, for the things they did go right with them.”
Revelation 14: 12,13 (Kingdom Interlinear) Here the endurance of the holy (ones) is, the (ones) observing the commandments of the God and the faith of Jesus. 13 And I heard of voice out of the heaven saying Write you Happy the dead (ones) the in Lord (ones) dying from right now. Yes, is saying the spirit, in order that they will be rested up out of the labors of them, the for works of them is following with them.
Revelation 14: 12,13 (Kingdom Interlinear) ῟Ωδε Here ἡ the ὑπομονὴ endurance τῶν of the ἁγίων holy (ones) ἐστίν, is, οἱ the (ones) τηροῦντες observing τὰς the ἐντολὰς commandments τοῦ of the θεοῦ God καὶ and τὴν the πίστιν faith Ἰησοῦ. of Jesus. 13 Καὶ And ἤκουσα I heard φωνῆς of voice ἐκ out of τοῦ the οὐρανοῦ heaven λεγούσης saying Γράψον Write you Μακάριοι Happy οἱ the νεκροὶ dead (ones) οἱ the ἐν in κυρίῳ Lord ἀποθνήσκοντες (ones) dying ἀπ’ from ἄρτι. right now. ναί, Yes, λέγει is saying τὸ the πνεῦμα, spirit, ἵνα in order that ἀναπαύσονται they will be rested up ἐκ out of τῶν the κόπων labors αὐτῶν, of them, τὰ the γὰρ for ἔργα works αὐτῶν of them ἀκολουθεῖ is following μετ’ with αὐτῶν. them.