I was reading Auld Souls post on a different thread and I noticed that in 1st Chronicles the NWT has the word (true) inserted in parenthesis in front of the word God.
1 Chronicles 15:25-16:6 And David and the older men of Israel and the chiefs of the thousands came to be the ones walking along to bring up the ark of the covenant of Jehovah from the house of Obed-edom with rejoicing. And it came about when the [true] God helped the Levites while carrying the ark of the covenant of Jehovah that they proceeded to sacrifice seven young bulls and seven rams. And David was dressed in a sleeveless coat of fine fabric, and also all the Levites carrying the Ark and the singers and Chenaniah the chief of the carrying by the singers; but upon David there was an ephod of linen. And all the Israelites were bringing up the ark of the covenant of Jehovah with joyful shouting and with the sounding of the horn and with trumpets and with cymbals, playing aloud on stringed instruments and harps.
And it came about that, when the ark of the covenant of Jehovah came as far as the City of David, Michal, Saul’s daughter, herself looked down through the window and got to see King David skipping about and celebrating; and she began to despise him in her heart.
16 Thus they brought the ark of the [true] God in and placed it inside the tent that David had pitched for it; and they began to present burnt offerings and communion sacrifices before the [true] God. When David finished offering up the burnt offering and the communion sacrifices, he went on to bless the people in the name of Jehovah. Further, he apportioned to all the Israelites, man as well as woman, to each one a round loaf of bread and a date cake and a raisin cake. Then he put before the ark of Jehovah some of the Levites as ministers, both to call to remembrance and to thank and praise Jehovah the God of Israel, Asaph the head, and second to him Zechariah, [and] Jeiel and Shemiramoth and Jehiel and Mattithiah and Eliab and Benaiah and Obed-edom and Jeiel, with instruments of the string type and with harps, and Asaph with the cymbals playing aloud, and Benaiah and Jahaziel the priests with the trumpets constantly before the ark of the covenant of the [true] God.
That is so strange. i checked the other translations I have and nobody else is doing it. Is that a common occurence in the NWT old testament?