Exodus 8:26
And Moses said, It is not meet so to do; for we shall sacrifice the abomination of the Egyptians to the Lord our God: lo, shall we sacrifice the abomination of the Egyptians before their eyes, and will they not stone us?
Cross-references
In Exodus 3:18, this is the original command to go three days into the wilderness to sacrifice — the very request that creates the conflict here.
Exodus 9:3 shows the immediate consequence of Pharaoh's refusal — a severe plague on livestock, escalating the judgment.
In Genesis 43:32, the Egyptians considered eating with Hebrews an abomination — the same cultural barrier that makes sacrificing their gods dangerous.
In Genesis 46:34, shepherds are an abomination to Egyptians — explains why Hebrew worship practices were offensive to them.
In Deuteronomy 7:26, bringing an abomination into your house makes you detestable — directly echoes the 'abomination' concern in Exodus.
In 2 Corinthians 6:14-17, this same principle of separation from idolatrous practices is applied to the church — 'come out from among them'.