god said to abilimech thou art a dead man. he aslo curse the Egyptians for the marriage to sarai by pharaoh. why would God judge them if they didn't do sarai wrong? abram set her up and lied to them and god protected sarai from that stuff.
1 And Abraham journeyed from thence toward the south country, and dwelled between Kadesh and Shur, and sojourned in Gerar.
2 And Abraham said of Sarah his wife, She
is my sister: and Abimelech king of Gerar sent, and took Sarah.
3 But God came to Abimelech in a dream by night, and said to him, Behold, thou
art but a dead man, for the woman which thou hast taken; for she
is a man's wife.
4 But
Abimelech had not come near her: and he said, Lord, wilt thou slay also a righteous nation?
5 Said he not unto me, She
is my sister? and she, even she herself said, He
is my brother: in the integrity of my heart and innocency of my hands have I done this.
6 And God said unto him in a dream, Yea, I know that thou didst this in the integrity of thy heart; for I also withheld thee from sinning against me: therefore suffered I thee not to touch her.
7 Now therefore restore the man
his wife; for he
is a prophet, and he shall pray for thee, and thou shalt live: and if thou restore
her not, know thou that thou shalt surely die, thou, and all that
are thine.
In v 3 God is saying that; only in the terms of Abimelec going thru with the plan; Had God not intervined there may have been a marriage or possibly sex; God stepped in before the plan unfolded. And they both were not planning to marry her. And neither married her. God did not say a single word to Abraham out leaving out the part of her being his wife when they ask who she was.