The story behind it can be learned from this textile, a Shulchan blanket that was inventoried in the old Jewish Museum. According to the inventory information, it is a brit milah blanket. Brit milah is the Hebrew term to describe the circumcision of an eight-day-old Jewish boy. On October 16, 1931, the blanket was given to the museum by Jenny Kronfeld. Through Google Arts & Culture, you can take a more exact look at the well-preserved figurative depiction of the sacrifice of Isaac.
This story takes Abraham as a role model; he would even have sacrificed his son if it had been God’s will. God tests Abraham and a ram is sacrificed instead of Isaac.