Final answer:
The primary reason God rescued Israel from Egypt was for them to serve and worship Him freely, signifying their commitment to monotheism and to living according to His commandments in the Promised Land.
Step-by-step explanation:
A chief purpose of God rescuing Israel from Egypt is so that they may serve and worship Him in freedom.
This is evidenced in the biblical narrative, which explains that after leaving Egypt—a period known as the Exodus—the Hebrews committed to worship only Yahweh and obey his laws.
Their journey through the Sinai desert and into Canaan signified their rejection of polytheism and their devotion to a monotheistic way of life, as they sought to fulfill the covenant with their God, which included living according to His commandments in the land promised to them.
This transition marked a critical point in Hebrew history and established the foundations for their future as a united monarchy in the region of Canaan.