When Israel’s deeds became corrupted, at that very time, it is stated of them: (Ex. 1:8) And there arose a new king over Egypt – and this was Pharaoh. About him it is stated: And Y”Y appointed a great fish to swallow Jonah (Jon. 2:1) – for he wanted to annul Israel from the world. It is this that is written: (Ex. 1:22)... every born son you shall throw into the river...
Corresponding to that: And Y’Y’ appointed a great fish, to swallow Jonah (Jon. 2:1) – to kill him. It is not written “to swallow Jonah”, but rather, to swallow ‘ET’ Jonah. The ET comes to include the Faithful Shepherd, by whose hand the Torah is destined to be given, which is ‘from Aleph א to Tav ת first and last of the alphabet’.