hendiatris

1. Three words used, but one thing meant. Though the Greeks did not name such a figure, it is clear that it is employed in Scripture. For we sometimes find three nouns instead of two, and in these cases there are two nouns exalted to the place of emphatic adjectives, which are thus raised to equal importance with the subject itself. (Bullinger, 675)

1. Jer. 4:2. -"And thou shalt swear, The LORD liveth, in truth, in judgment, and in righteousness": i.e., thou shalt swear, in truth (i.e., truly, yes-justly righteously). In swearing by Jehovah in truth, justice and righteousness is included; not only that people swear the truth (Lev. 19:12. Num. 30:3. Jer. 5:2. Matt. 5:33), but also that they swear by Jehovah alone (i.e., justly and righteously), and not by idols also, as, according to Zeph. 1:5, they did in his day. (Bullinger, 675)