The three chapters for today tells about Jesus fasting in the wilderness, from which we get the current day period of lent, the feast of unleavened bread and the crossing of the Red Sea.
Matthew 4 tells of Jesus as He was led into the wilderness to be tempted of Satan after he fasted for 40 days and 40 nights. Jesus combated Satan with scripture, but Satan could quote scripture too. In the end Satan left him for a season and Jesus began his ministry and called his first disciples.
In Exodus 13 the feast of unleavened bread is defined and the consecrating of the firstborn to the LORD. The Hebrews have escaped from Egypt, and a proposed route is suggested.
Exodus 14 then tells of the miraculous crossing of the Red Sea and how the pursuing Egyptian army drowned.