Numbers 16:5
3 And they assembled against Moses and Aaron, saying to them, “You take too much upon yourselves, seeing that the whole community is holy, every one of them, and the Lord is among them. Why then do you exalt yourselves above the community of the Lord?” 4 When Moses heard it he fell down with his face to the ground. 5 Then he said to Korah and to all his company, “In the morning the Lord will make known who are his, and who is holy. He will cause that person to approach him; the person he has chosen he will cause to approach him. 6 Do this, Korah, you and all your company: Take censers, 7 put fire in them, and set incense on them before the Lord tomorrow, and the man whom the Lord chooses will be holy. You take too much upon yourselves, you sons of Levi!”
2 Timothy 2:19
17 and their message will spread its infection like gangrene. Hymenaeus and Philetus are in this group. 18 They have strayed from the truth by saying that the resurrection has already occurred, and they are undermining some people’s faith. 19 However, God’s solid foundation remains standing, bearing this seal: “The Lord knows those who are his,” and “Everyone who confesses the name of the Lord must turn away from evil.” 20 Now in a wealthy home there are not only gold and silver vessels, but also ones made of wood and of clay, and some are for honorable use, but others for ignoble use. 21 So if someone cleanses himself of such behavior, he will be a vessel for honorable use, set apart, useful for the Master, prepared for every good work.
Notes and References
"... Regarding the κύριος title: The use of 'Lord' with reference to God is especially visible in those places where an Old Testament text is cited, including when this is done indirectly (2 Timothy 1:19 / Numbers 16:5; also 2 Timothy 2:7; Proverbs 2:6) or stands in the background (2 Timothy 4:14; compare Psalm 62:13; Proverbs 24:12 - sometimes without an explicit mention of the κύριος). While here the world of Old Testament thought is adopted, where God is designated as creator or judge by the title 'Lord,' in the authentic Pauline letters there is a fluid transition to Christology, since Paul can often use predicates of God with reference to Jesus ..."
Strecker, Georg Theology of the New Testament (p. 585) Westminster John Knox Press, 2000