John Gill Commentary Judges 19:5

"And it came to pass on the fourth day, that they arose early in the morning, and he rose up to depart: and the damsel`s father said unto his son-in-law, Strengthen thy heart with a morsel of bread, and afterward ye shall go your way." — Judges 19:5 (ASV)

And it came to pass on the fourth day
The time the Levite had agreed to stay being up:

when they arose early in the morning
the Levite, his concubine and servant, in order to set out on their journey: that he arose to depart; the Levite rose up from his seat to take his leave of his father-in-law, and depart from his house, and proceed on his way homeward; for rising out of his bed is before expressed:

and the damsel's father said to his son in law, comfort your heart with
a morsel of bread ;
take a breakfast first, that he might be fitter for his journey, for bread comforts or strengthens men's hearts, (Psalms 104:15) though here it may be put for any and all sorts of provisions, whatever might be proper to take early in a morning, and before setting out on a journey: and afterwards go your way; he seemed as if he was willing he should set forward, after he had refreshed him with a meal.