Genesis 27:23

Overview - Genesis 27
1	Isaac sends Esau for venison.
6	Rebekah instructs Jacob to obtain the blessing.
14	Jacob, feigning to be Esau, obtains it.
30	Esau brings venison.
33	Isaac trembles.
34	Esau complains, and by importunity obtains a blessing.
41	He threatens Jacob's life.
42	Rebekah disappoints him, by sending Jacob away.

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Genesis 27:23 (King James Version)
And he discerned him not, because his hands were hairy, as his brother Esau's hands: so he blessed him.