Not a Fib

“The divine name that is explicitly associated with [the Abrahamic covenant] is ‘êl šadday. Its sign is the circumcision” (The Oxford Study Bible, page 154).

Does not the word Shaddai mean God’s breast? How strange that God would give Abraham this explicitly feminine name to call her, and then ask him to respond with an explicitly masculine sign. I don’t know, maybe not so strange.