John Gill Commentary Judges 13:15

"And Manoah said unto the angel of Jehovah, I pray thee, let us detain thee, that we may make ready a kid for thee." — Judges 13:15 (ASV)

And Manoah said unto the angel of the Lord
Being satisfied with what he had said, and perceiving that he chose to say no more, and was about to depart:

I pray thee let me detain thee, until we shall have made ready a kid
for thee ;
to eat a meal with them, in token of gratitude for the trouble he had been at in bringing these messages to them, taking him to be a man, a prophet of the Lord, for whom they were wont to make entertainments; and Abarbinel thinks Manoah proposed this, on purpose to detain him, in hope that while they were eating together he would reveal some secrets unto him.