22 Heb “this night.”
23 Bread made without yeast could be baked quickly, not requiring time for the use of a leavening ingredient to make the dough rise. In Deut 16:3 the unleavened cakes are called “the bread of affliction,” which alludes to the alarm and haste of the Israelites. In later Judaism and in the writings of Paul, leaven came to be a symbol of evil or corruption, and so “unleavened bread”—bread made without yeast—was interpreted to be a picture of purity or freedom from corruption or defilement (S. R. Driver, Exodus, ).

In other versions

They shall eat the flesh that night, roasted on the fire; with unleavened bread and bitter herbs they shall eat it.

That same night they are to eat the meat roasted over the fire, along with bitter herbs, and bread made without yeast.

They are to eat the meat that night; they should eat it, roasted over the fire along with unleavened bread and bitter herbs.

That same night they must roast the meat over a fire and eat it along with bitter salad greens and bread made without yeast.

And they will eat the meat on this night; they will eat it fire-roasted and with unleavened bread on bitter herbs.

And they shall eat the flesh in that night, roast with fire, and unleavened bread; and with bitter herbs they shall eat it.

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