Exodus 23:20
18 “You must not offer the blood of my sacrifice with bread containing yeast; the fat of my festal sacrifice must not remain until morning. 19 The first of the firstfruits of your soil you must bring to the house of the Lord your God. “You must not cook a young goat in its mother’s milk. 20 “I am going to send a messenger before you to protect you as you journey and to bring you into the place that I have prepared. 21 Take heed because of him, and obey his voice; do not rebel against him, for he will not pardon your transgressions, for my Name is in him. 22 But if you diligently obey him and do all that I command, then I will be an enemy to your enemies, and I will be an adversary to your adversaries.
Exodus 33:14
12 Moses said to the Lord, “See, you have been saying to me, ‘Bring this people up,’ but you have not let me know whom you will send with me. But you said, ‘I know you by name, and also you have found favor in my sight.’ 13 Now if I have found favor in your sight, show me your way, that I may know you, that I may continue to find favor in your sight. And see that this nation is your people.” 14 And the Lord said, “My presence will go with you, and I will give you rest.” 15 And Moses said to him, “If your presence does not go with us, do not take us up from here. 16 For how will it be known then that I have found favor in your sight, I and your people? Is it not by your going with us, so that we will be distinguished, I and your people, from all the people who are on the face of the earth?”
Notes and References
"... entities personifying divine aspects, such as the divine “name”, “face”, and “glory”, sometimes describe the divine presence in priestly and Deuteronomistic traditions, attested in the Pentateuch as the priestly (P) and Deuteronomistic (D) traditions or “sources.” In Isaiah 30:27, part of an oracle dated to the eighth or seventh century, the divine name serves as the divine instrument of theophanic wrath: “Behold, the name of Yahweh comes from afar, burning with his anger, and in thick rising smoke, and his tongue is a devouring fire.” In this instance, the divine name acts as warrior (compare 1 Samuel 6:2), a depiction frequently applied to Yahweh in earlier material and applied later to the divine logos, “word” (Wisdom of Solomon 18:15; Revelation 19:11-16). The substitution of the angel and the name for Yahweh is an issue in Exodus 32-33. Exodus 32:34 and 33:2 declare that an angel will lead Israel. This leadership substitutes for Yahweh’s guidance (Exodus 33:16). In contrast, Exodus 33:14 states the divine “presence” will escort the people. Exodus 23:20-21 exhibits a third variation on this theme. This passage states that the divine name is in the angel leading Israel (compare Isaiah 63:9). The divine “glory” dwells in the temple according to priestly theology (Psalm 26:8; Isaiah 4:5; Ezekiel 43:3-5), like the divine “name” in Deuteronomistic tradition ..."
Smith, Mark S. The Early History of God: Yahweh and the Other Deities in Ancient Israel (p. 144) William B. Eerdmans Publishing Company, 2002