1. RASHI METHOD: REFERENCES BRIEF EXPLANATION: Commentary on a verse is provided thru a cross-reference to another verse. The cross references can either provide (1a) further details, (1b) confirm citations, or (1c) clarify word meaning. This examples applies to Rashis Gn18-17b URL Reference: (c) http://www.Rashiyomi.com/rule1313.htm Brief Summary: (Gn18-17b) Shall I, God, hide from Abraham, what I am about TO DO. REFERENCES: Gn18-20 God's plan to destroy Sedom-Amorah.

Verse Gn18-17b discussing God not hiding planned future action from Abraham states And HaShem said: 'Shall I hide from Abraham what I am doing; Rashi notes that the underlined words, what I am doing, references verses Gn18-20:21 discussing God's intended destruction of Sedom and Amorah. Hence the Rashi comment The statement in Gn18-17 shall I, God, hide from Abraham what I am doing references Gn18-20 discussing the destruction of Sedom and Amorah.

Text of Target Verse Gn18-17b	Text of Reference Verse Gn18-20:21
And HaShem said: 'Shall I hide from Abraham what I am doing;	And the Lord said, Because the cry of Sodom and Gomorrah is great, and because their sin is very grave; I will go down now, and see whether they have done altogether according to the cry, [and if so] if will destroy them; and if not, I will teach them a lesson.
Rashi comments: The statement in Gn18-17 shall I, God, hide from Abraham what I am doing references Gn18-20 discussing the destruction of Sedom and Amorah.

Advanced Rashi: Rashi brings in several other references:
• Rashi cites Gn10-19 Sedom/Amorah define the border of Canaan which will be given to Abraham one day
• and Gn17-04 Abraham will become a great nation
• Rashi adds Since God intended to destroy Sedom/Amorah which were on the border of the nation that God promised Abraham, therefore God felt ethically obligated to tell Abraham about the destruction of Sedom and Amorah.