Only Jacob and Joseph, his son, are recorded in Scripture as being embalmed, and the process was quite involved. You had to know what you are doing. You had to get out all the organs from the body cavities. We read they used very elaborate systems to somehow extricate the brain through the nostrils, and then they had to get all the contents of the chest and the abdomen out, and when they done that, they filled it all up with spices after soaking the body for seven days in saltpetre, washing it out with sweet wine and then soaking it in gum. It was then wrapped with layers of bandages with various wonderfully smelling substances,, and placed in the mummy case. It was a very elaborate process and it took forty days, forming part of the seventy days of mourning.