Genesis 18

The narrative progresses from a scene of domestic grace and hospitality to a scene of judicial decision, showing that God's covenant promises to Abraham (Isaac) are inextricably linked to His sovereignty over the nations (Sodom).

• I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son (v. 10).
• If I find in Sodom fifty righteous within the city, then I will spare all the place for their sakes (v. 26).
• I will not destroy it for ten's sake (v. 32).

• Command his children and his household after him, and they shall keep the way of the Lord, to do justice and judgment (v. 19).

• Because the cry of Sodom and Gomorrah is great, and because their sin is very grievous (v. 20).

• The scene is set in the patriarchal period (c. 2000 BC) near Hebron (Mamre).
• Abraham’s actions reflect the necessary culture of extreme hospitality in a nomadic, arid environment where travelers had no 'inns' and depended on local tribes for survival.

• Washing of feet (rāchats, H7364) was essential for travel in hot climates where sandals were the primary footwear.
• The 'tent' (’ōhel, H168) was the center of social and covenant life; the women’s quarters were protected and distinct.

• Genesis 18 continues the revelation of the Covenant begun in chapter 17, shifting from the promise of descendants (Isaac) to the role of the covenant family in the world (witness and intercession).
• This chapter sets the stage for the narrative arc of Sodom’s judgment in chapter 19.

• The reference in verse 18 ('all the nations of the earth shall be blessed in him') serves as a critical thematic anchor, linking back to the Abrahamic Covenant of Genesis 12:3.
• The passage presents God’s 'knowing' of Abraham (v. 19) in a relational and covenantal sense, implying both foreknowledge and covenantal election.

• Hebrews 13:2 references this event: 'Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.'
• Matthew Henry observes that though our condescending Lord vouchsafes not personal visits to us, yet by His Spirit He stands at the door and knocks, and when we are inclined to open, He enters to provide a rich feast of consolation.

• ‘The Lord appeared’ (rā'āh, H7200): This verb denotes a visual manifestation. It is the same root used for vision, emphasizing that this was a deliberate divine self-revelation.
• ‘Lord’ (ădōnāy, H136): Used here in v. 3, this is the proper name form for God used in address, suggesting Abraham recognized the divine nature of the interaction.
• ‘Heat’ (chōm, H2527): Highlights the physical discomfort of the day, magnifying Abraham’s act of service in running (rūts, H7323) to meet the guests.
• ‘Dust and ashes’ (v. 27): Abraham uses an idiomatic expression of profound humility, recognizing his creaturely state before the Creator.

• Sarah is behind the tent door (v. 10), unseen by the visitors, yet the Lord (who is also the one speaking) knows her heart and thoughts perfectly, demonstrating His omniscience.
• The distinct identity of the 'three men' (vv. 2, 16, 22) shifts; by v. 22, the men go toward Sodom, but Abraham remains with 'the Lord'.

• There is long-standing debate over the identity of the 'three men.' The most common historic positions are: 1) They are three created angels. 2) They are a manifestation of the Trinity (often favored by some early Church fathers). 3) They represent the pre-incarnate Christ (the Angel of the Lord) accompanied by two angels. Scripture does not explicitly define the ontology of the visitors, only that the Lord (Jehovah) is present and speaking.
• The nature of God's 'knowing' in v. 21 (whether it implies a lack of knowledge that needs investigation, or an anthropomorphic act of 'coming down' to provide a judicial basis for judgment before humanity) is widely discussed; the text presents it as a judicial inspection.