Yes, ISV Bible footnotes on 2 Tim 2:19 Cf. Num 16:5 and Cf. Num 16:26. It is rather allusion than exact quotation, we would hardly find exact quotations, since that was unnecessary. Quotes or allusions of scripture can come also as amalgamation of multiple references. See Midrash for advanced hermeneutics study.
ISV Nahum 1:7: “ The Lord is good a refuge in troubled times. He knows those who are confiding in him.”
Numbers 16:5: “Then he addressed Korah and his entire company, "In the morning, may the Lord reveal who belongs to him and who is holy. May he cause that person to approach him. May he cause to approach him the one whom he has chosen.”
Numbers 16:21-26: “"Separate yourselves from among this community, and I'll destroy them in a moment." Then they fell on their faces and said, "God, the God of the spirits of all flesh, will you be angry at the entire congregation on account of one man's sin?" Then the Lord instructed Moses, "Tell the community to move away from where Korah, Dathan, and Abiram are living." So Moses got up and went to Dathan and Abiram, and the elders of Israel followed him. Then he told the community, "Move away from the camps of these wicked men and don't touch anything that belongs to them. That way you won't be destroyed along with all their sins."”
Regarding Everyone who names the name of the Lord, depart from wickedness must be an allusion to Isaiah 52:11+26:13. The Expositor's Greek Testament states:
Ἀποστήτω κ.τ.λ.: The language is perhaps another echo of the story of Korah: Ἀποσχίσθητε ἀπὸ τῶν σκηνῶν τῶν ἀνθρώπων τῶν σκληρῶν τούτων … μὴ συναπόλησθε ἐν πάσῃ τῇ ἁμαρτίᾳ αὐτῶν. καὶ ἀπέστησαν ἀπὸ τῆς σκηνῆς Κόρε (Num 16:26-27). But Isa 52:11 is nearer in sentiment, ἀπόστητε ἀπόστητε, ἐξέλθατε ἐκεῖθεν καὶ ἀκαθάρτου μὴ ἅψησθε, … οἱ φέροντες τὰ σκεύη Κυρίου, cf. Luk 13:27. Also Isa 26:13, Κύριε, ἐκτὸς σοῦ ἄλλον οὐκ οἴδαμεν, τὸ ὄνομά σου ὀνομάζομεν. The spiritual logic of the appeal is the same as that of Gal 5:25, “If we live by the Spirit, by the Spirit let us also walk”. Bengel thinks that ἀπὸ ἀδικίας is equivalent to ἀπὸ ἀδίκων, the abstract for the concrete; cf. 2Ti 2:21, “purge himself from these”.
The phrase ὁ ὀνομάζων τὸ ὄνομα κυρίου - He who names the name of Lord is the same as the blasphemy verse Leviticus 24:16 ὀνομάζων δὲ τὸ ὄνομα κυρίου θανάτῳ θανατούσθω he that names the name of the Lord, let him die the death (Brenton's English translation LXX). The blasphemy context of the phrase would refer to the harassment of God, which may be an idiomatic meaning of "naming or taking someone's name". See this site Lexicon-Katabiblon for easy references of OT quotes or allusions in the NT. Kata Biblon Wiki Lexicon, they have even listed the allusions on all NT verses, the exact thing many here are looking for. On 2Tim 2:19 it states:
- a Nm. 16:5 LXX: "καὶ ἐλάλησεν πρὸς Κορε καὶ πρὸς πᾶσαν αὐτοῦ τὴν συναγωγὴν λέγων ἐπέσκεπται καὶ ἔγνω ὁ θεὸς τοὺς ὄντας αὐτοῦ..." [And he spoke to Core [Korah] and all his assembly, saying, God has visited and known those that are his... (Brenton)].
- b Is. 26:13 LXX: "...κύριε ἐκτὸς σοῦ ἄλλον οὐκ οἴδαμεν τὸ ὄνομά σου ὀνομάζομεν" [...O Lord, we know not any other beside thee: we name thy name (Brenton)].
- c Job 36:10 LXX: "ἀλλὰ τοῦ δικαίου εἰσακούσεται καὶ εἶπεν ὅτι ἐπιστραφήσονται ἐξ ἀδικίας" [But he will hearken to the righteous: and he has said that they shall turn from unrighteousness (Brenton)].