Genesis 18:17-21

Verse 17

Shall I hide from Abraham - That is, I will not hide. A common mode of speech in Scripture - a question asked when an affirmative is designed. Do men gather grapes of thorns? Men do not gather grapes of thorns, etc.
Verse 18

Shall surely become a great and mighty nation - The revelation that I make to him shall be preserved among his posterity; and the exact fulfillment of my promises, made so long before, shall lead them to believe in my name and trust in my goodness.
Verse 19

And they shall keep the way of the Lord - The true religion; God's way; that in which God walks himself, and in which, of course, his followers walk also; to do justice and judgment; not only to preserve the truth in their creed, but maintain it in their practice.
Verse 20

Because the cry of Sodom and Gomorrah - See note on Gen 13:13.
Verse 21

I will go down now, etc. - A lesson to magistrates, teaching them not to judge according to report, but accurately to inquire into the facts themselves - Jarchi.
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