This is technically unanswerable since The Bible does not answer this question specifically. However the following are some options from which to select.
Abimelech was the first person recorded as having had a dream in Genesis.
3But 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. Secondly, Joseph was referred to in a derogatory way by his brothers as a 'dreamer'. 19And they said one to another, Behold, this dreamer cometh. Thirdly, since sleep is a normal and natural part of the sleep process it would be difficult to imagine that Adam never dreamed.
Abimilech
Abraham is first mentioned in the Old Testament.
The first book of Old Testament poetry is named for Job.
First Adam and eve come to the mind from the old testament.
The Hebrew people were the first people to use the old testament.
Genesis is the first book of the Old Testament.
In the old testament the first womens name is Eve. Adams wife.
In the book of Genesis, the first book of the Old Testament.
It is the first book in the New Testament.
The story of Noah and the ark is found in the first book of the old testament Genesis.
The Torah is the first five books of the Old Testament.
the old testament. it is the very first book in the bible
"Pentateuch" is a term for the first five books of the Old Testament.