Hi unred,
It is kind of a long read to get the point out of this passage, so I highlighted the points in red. It speaks of Abraham, God is talking to Abimelech, and he tells him that Abraham is a prophet.
Gen 20:1 ¶ And Abraham journeyed from thence toward the south country, and dwelled between Kadesh and Shur, and sojourned in Gerar.
Gen 20:2 And Abraham said of Sarah his wife, She [is] my sister: and Abimelech king of Gerar sent, and took Sarah.
Gen 20:3 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.
Gen 20:4 But Abimelech had not come near her: and he said, Lord, wilt thou slay also a righteous nation?
Gen 20:5 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.
Gen 20:6 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.
Gen 20:7 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.
As far as documentation that Abraham knew details about creation...
It might help if you could give chapter and verse that inspired your question.