וַיֹּאכְל֣וּ וַיִּשְׁתּ֗וּ ה֛וּא וְהָאֲנָשִׁ֥ים אֲשֶׁר־עִמּ֖וֹ וַיָּלִ֑ינוּ וַיָּק֣וּמוּ בַבֹּ֔קֶר וַיֹּ֖אמֶר שַׁלְּחֻ֥נִי לַֽאדֹנִֽי׃
이에 그들 곧 종과 종자들이 먹고 마시고 유숙하고 아침에 일어나서 그가 가로되 나를 보내어 내 주인에게로 돌아가게 하소서
Rashi
וילינו AND LODGED OVER NIGHT — wherever the root לין occurs in Scripture it signifies staying for only one night.
Radak
ויאכלו, this has been explained, i.e. now that Eliezer had explained his mission he felt free to eat the meal which had been placed before him.