Mishnah, Pesachim 10:5

In every generation, one is obligated to see oneself as if they left Egypt, as it is said (Exodus 13), “And you will tell your child on that day, saying, ‘Because of this that God did for me when I left Egypt.’” Therefore we are obliged to thank, praise, glorify, extol, exalt, beatify, bless, etc., etc. to the One who did all these miracles for our ancestors and for us: Who brought us out from slavery to freedom, from sadness to joy, from mourning to festivity, from darkness to great light, from servitude to redemption. And we say before God, Hallelujah. [Soncino translation. Edited for gender neutrality]