Numbers 3:46 in the King James Version of the Bible reads: "And for those that are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, which are more than the Levites."

This verse is part of a larger passage that describes the role of the Levites in the service of the tabernacle, and specifically, their duties in place of the firstborn sons of Israel. In this verse, the number of firstborns who were to be redeemed is given as "two hundred and threescore and thirteen," which is 273 in total.

To understand the full significance of this verse, it is essential to consider it in its broader context. The book of Numbers is the fourth book of the Pentateuch, and it continues the narrative of the Israelites' journey from Mount Sinai to the promised land. The book is named "Numbers" because it begins with a census of the Israelites, as they prepare for their journey and for the distribution of land among the tribes.

In the specific passage of Numbers 3, the focus is on the Levites, who were selected by God to serve as priests and caretakers of the tabernacle. The firstborn sons of the Israelites were originally destined for this role, but after the sin of the golden calf, the Levites were chosen in their place as a way for the Israelites to atone for their sins. In verses 11-13, God tells Moses to take the Levites for himself in place of all the firstborn sons among the Israelites, and from then on, the Levites became dedicated to the service of the tabernacle.

The significance of the specific number mentioned in Numbers 3:46 is not entirely clear, and scholars have debated its meaning. Some have suggested that the number 273 has symbolic significance, representing the totality of the firstborn sons who were to be redeemed. In biblical numerology, three often represents divine perfection, and seven signifies completeness or fullness, so the combination of these numbers could symbolize the completeness of God's plan for the redemption of the firstborns.

Another possible meaning of the number 273 is that it simply represents the actual count of the firstborn sons who were to be redeemed at the time of the census. This interpretation emphasizes the historical and practical aspect of the verse, focusing on the specific number of individuals who fell into this category.

The broader themes of Numbers 3:46 and its surrounding passage include the concept of redemption and substitution. The redemption of the firstborn sons through the Levites is a foreshadowing of the ultimate redemption that would come through Jesus Christ, who is often seen as the ultimate substitute for humanity's sin. This theme of substitution is central to the Christian understanding of atonement and salvation, and it is prefigured in the Old Testament through practices such as the redemption of the firstborns.

In addition to the themes of redemption and substitution, Numbers 3:46 also emphasizes the idea of God's sovereignty and his ability to set apart individuals for specific purposes. The selection of the Levites to serve in place of the firstborns is a clear example of God's authority to designate and appoint individuals for his service.

In conclusion, Numbers 3:46 is a verse that holds deep significance within the broader context of the book of Numbers and the Old Testament as a whole. Its themes of redemption, substitution, and divine sovereignty are central to the biblical narrative, and its specific mention of the number 273 invites further contemplation on the ways in which God works out his plans and purposes in the world.