וַיַּ֤עַשׂ לָהֶם֙ מִשְׁתֶּ֔ה וַיֹּאכְל֖וּ וַיִּשְׁתּֽוּ׃
以撒就為他們設擺筵席，他們便吃了喝了。
Radak
ויעש להם משתה, in order to preserve the friendly atmosphere he prepared a feast for them and they ate and drank together.
Haamek Davar
He made a feast for them. It is the way of the righteous to be easily appeased.