Pesachim 118B

ואקדיח מבחוץ, ואעשה נס בתוך נס. אמר לו הקדוש ברוך הוא: רד! באותה שעה פתח גבריאל ואמר: ״ואמת ה׳ לעולם״.

and I will burn it from the outside, to consume those who threw the 3 righteous men into the furnace; and I will thereby perform a miracle within a miracle. God said to him: Descend. At that time Gabriel began praising God and recited: “And the truth of YHWH endures forever” (Psalms 117:2), as God fulfilled His promise to him from more than 1,000 years earlier.

רבי נתן אומר: ״ואמת ה׳ לעולם״⁠ — דגים שבים אמרוהו, כדרב הונא. דאמר רב הונא: ישראל שבאותו הדור מקטני אמנה היו, וכדדרש רבה בר מרי: מאי דכתיב ״וימרו על ים בים סוף״⁠ — מלמד שהמרו ישראל באותה שעה ואמרו: כשם שאנו עולין מצד אחד, כך מצריים עולים מצד אחר.

R' Natan says: “And the truth of YHWH endures forever” was actually recited by the fish in the sea, in accordance with a statement of Rav Huna. As Rav Huna said: The Jewish people of that generation, during the Exodus, were of little faith. And this statement is as Rabba bar Mari taught: What is the meaning of that which is written: “But they were rebellious at the sea, even at the Red Sea” (Psalms 106:7)? This teaches that the Jews rebelled against Moses at that time, and said: Perhaps, just as we are ascending from one side, so too the Egyptians are ascending from the other side, and we will not be saved.

אמר לו הקדוש ברוך הוא לשר של ים: פלוט אותן ליבשה! אמר לפניו: רבונו של עולם, כלום יש עבד שנותן לו רבו מתנה וחוזר ונוטל ממנו? אמר לו: אתן לך אחד ומחצה שבהן.

God said to the ministering angel of the sea: Spew out the dead Egyptians onto dry land. The sea said before Him: God! is there a servant whose master gives him a gift and then takes it from him? Since the dead Egyptians were given to me for my fish to eat, how can God retract His gift? He said to him: I will give you 1½ times their number. Although I am taking them back now, later I will give you 1½ times as many people.