創世記 2:23 註釋：Rashi, Rashbam, Radak & Sforno

זאת הפעם THIS NOW — This teaches that Adam endeavoured to find a companion among all cattle and beasts, but found no satisfaction except in Eve (Yevamot 63a).

זאת הפעם עצם מעצמי, “only this time will man’s wife be made of his own bone and flesh; in the future things will be reversed, a male will come forth from a female, not as this time.”

ויאמר..זאת, for on the first occasion when G’d brought the domesticated animals, the free roaming beasts and the birds to be inspected by Adam, he had not seen among them one that would qualify as his mate. The reason was that none of them matched him in physical features even, not to speak of intellectual compatibility. However, this time, finally, when G’d brought Chavah to him, he recognised immediately that he had found a truly compatible mate. He did not only realise this by comparing her visible features, but he became aware that part of his body, or at least one of his ribs, had been removed, which confirmed his impression that Chavah must indeed be his other half.