Abraham left his house and lived in tents. The Bible mentions that he dwelled in places like Beersheba, Hebron, Salem (Jerusalem), Bethel and Shechem.
During the winter months it is cold and rainy there.
Can you imagine Abrahams daily life in those weather conditions?
Genesis 15: 6 (ASV) And he believed in Jehovah; and he reckoned it to him for righteousness. 7 And he said unto him, I am Jehovah that brought thee out of Ur of the Chaldees, to give thee this land to inherit it.
Romans 4:3 (ASV) For what saith the scripture? And Abraham believed God, and it was reckoned unto him for righteousness.