Whenever the WT translators saw "Jehovah" in an OT quote, they inserted it into the New Testament where that quote appeared EXCEPT where it was talking about Jesus.Actually no... Many times they do put "Jehovah" even though the quote refers to Jesus.
Then they rendered it "Lord."
Examples are:
(Matthew 3:3) . . .This, in fact, is the one spoken of through Isaiah the prophet in these words: “Listen! Someone is crying out in the wilderness, ‘Prepare the way of Jehovah, YOU people! Make his roads straight.. . .
(Mark 1:1-3) . . .The] beginning of the good news about Jesus Christ: 2 Just as it is written in Isaiah the prophet: “(Look! I am sending forth my messenger before your face, who will prepare your way;) 3 listen! someone is crying out in the wilderness, ‘Prepare the way of Jehovah, YOU people, make his roads straight,’”
(Luke 1:17) 17 Also, he will go before him with E·liʹjah’s spirit and power, to turn back the hearts of fathers to children and the disobedient ones to the practical wisdom of righteous ones, to get ready for Jehovah a prepared people.”
(Luke 1:76) . . .But as for you, young child, you will be called a prophet of the Most High, for you will go in advance before Jehovah to make his ways ready,
Who actually came and walked the Earth? Jesus, not Jehovah. So why would John prepare Jehovah's road if Jesus would be the one walking it?
Here it would totally make sense that the original NT used "Lord", because in my opinion putting "Jehovah" in there actually is more trinitarian than putting "Lord".
Same with Romans 10:13
(Romans 10:13) 13 For “everyone who calls on the name of Jehovah will be saved.”
If you look at the context, Romans 10 is talking about Jesus...
Verses 11-14, if you read them carefully, link up. The person who you have to put faith in (verse 11, Jesus) is the same person who's name you have to call (verse 13, Jesus).
But if the Watchtower insists that verse 13 is Jehovah, then they have unwittingly said that Jesus = Jehovah.
So the text ends up being more trinitarian than if they had just kept "Lord".
But then... they chicken out when it comes to putting "Jehovah" in Hebrews 1:10 and 1 Peter 2:3.