Psalm 136:1-15 and Exodus 12:37-42

Psalm 136:1-15
1 Alleluia. Confess to the Lord, for he is good: for his mercy is eternal.
2 Confess to the God of gods, for his mercy is eternal.
3 Confess to the Lord of lords, for his mercy is eternal.
4 He alone performs great miracles, for his mercy is eternal.
5 He made the heavens with understanding, for his mercy is eternal.
6 He established the earth above the waters, for his mercy is eternal.
7 He made the great lights, for his mercy is eternal:
8 the sun to rule the day, for his mercy is eternal:
9 the moon and the stars to rule the night, for his mercy is eternal.
10 He struck Egypt along with their first-born, for his mercy is eternal.
11 He led Israel away from their midst, for his mercy is eternal:
12 with a powerful hand and an outstretched arm, for his mercy is eternal.
13 He divided the Red Sea into separate parts, for his mercy is eternal.
14 And he led out Israel through the middle of it, for his mercy is eternal.
15 And he shook off Pharaoh and his army in the Red Sea, for his mercy is eternal.
Exodus 12:37-42
37 And the sons of Israel set out from Rameses to Soccoth, about six hundred thousand men on foot, besides little ones.
38 But also an innumerable mix of common people ascended with them, sheep and herds and animals of diverse kinds, exceedingly many.
39 And they baked the bread, which a little while ago they had taken out of Egypt as dough. And they made unleavened bread baked under ashes. For it was not able to be leavened, with the Egyptians compelling them to leave and not permitting them to cause any delay. Neither did they have occasion to prepare any meat.
40 Now the habitation of the sons of Israel, while they remained in Egypt, was four hundred and thirty years.
41 Having been completed, on the same day all the army of the Lord departed from the land of Egypt.
42 This night is a worthy observance of the Lord, when he led them out of the land of Egypt. This all the sons of Israel must observe in their generations.