'Sarah said' means perception from the Divine spiritual. 'God has made laughter for me' means the affection for celestial truth. 'Everyone who hears will laugh for-me' means that all things there will possess the affection. 'And she said' means thought. 'Who would have said to Abraham, Sarah will suckle sons?' means that by His own power the Lord implanted the Human within the Divine. 'For I have borne [him] a son in his old age' means that this was accomplished when the days had been completed.