Martin Luther on Psalms 124:3

Verſe 3. They had then ſwallowed us up quick, when their wrath was kindled againſt us. In theſe words he expreſſeth, not only the ſtrength, rage, and cruelty of the enemies: but alſo how weak and unable the Iſraelites were to withſtand them. And here he uſeth a ſimilitude taken of fierce and outragious beaſts, whoſe property is, when they have taken their Preys, to ſwallow them up alive. Likewiſe when we would expreſs the cruelty or malice of any towards us, we are wont to ſay: He hateth me ſo deadly, that he could find in his heart to eat me, or ſwallow me up quick. The Prophet meaneth then that their enemies were ſo many and ſo mighty, that they needed no armour or weapons to deſtroy them, but were able, like fierce and cruel beaſts, to ſwallow them up alive, being ſo weak and ſo little a flock.