Adam Clarke on Luke 2:31

Which thou hast prepared - Ὁ ἡτοιμασας, which thou hast Made Ready before the face, in the presence, of all people. Here salvation is represented under the notion of a feast, which God himself has provided for the whole world; and to partake of which he has invited all the nations of the earth. There seems a direct allusion here to Isa 25:6, etc. "In this mountain shall the Lord of hosts make unto all people a feast of fat things," etc. Salvation is properly the food of the soul, by which it is nourished unto eternal life; he that receiveth not this, must perish for ever.