Exodus 38:21 in the King James Version reads, "This is the sum of the tabernacle, even of the tabernacle of testimony, as it was counted, according to the commandment of Moses, for the service of the Levites, by the hand of Ithamar, son to Aaron the priest."

The book of Exodus in the Bible is the second book of the Old Testament and narrates the story of the Israelites' escape from slavery in Egypt. This specific verse falls within the context of the construction of the tabernacle, which was a portable sanctuary that the Israelites used as a place of worship during their time in the wilderness.

The tabernacle was a significant symbol in the religious life of the Israelites, as it represented God's presence among them. The tabernacle was divided into two main sections: the Holy Place and the Most Holy Place. The innermost part, the Most Holy Place, was where the Ark of the Covenant was kept, and it was only entered by the High Priest once a year on the Day of Atonement.

The tabernacle was also known as the "tabernacle of testimony," as it was a place where the Israelites could bear witness to their faith and experience the presence of God. The tabernacle was a physical representation of the covenant between God and His chosen people, and it was a central aspect of their worship and religious practice.

In Exodus 38:21, the verse emphasizes the careful attention to detail and precision in the construction and organization of the tabernacle. The specific mention of the "sum" of the tabernacle highlights the meticulous counting and measurement of all the elements and resources used in its construction. This demonstrates the importance of order and structure in the worship of God and signifies the reverence and respect the Israelites had for their place of worship.

The verse also mentions that the counting and organization were done "according to the commandment of Moses." This highlights the authority and leadership of Moses, who received direct instructions from God regarding the construction and operation of the tabernacle. It was essential for the Israelites to follow these instructions carefully, as they were given by God Himself.

The involvement of Ithamar, the son of Aaron the priest, further emphasizes the priestly and sacred nature of the tabernacle. The Levites, who were the designated tribe responsible for the service of the tabernacle, were under the authority of the high priest, and their work was crucial for the functioning of the sanctuary.

In a broader sense, this verse serves as a reminder of the importance of order, precision, and obedience in the service of God. The meticulous counting and following of instructions highlight the need for reverence and respect in matters of faith and worship. It also emphasizes the significance of leadership and authority in religious practice, as exemplified by Moses and Aaron's family.

Symbolically, the tabernacle represents the dwelling place of God among His people. It symbolizes the sacred space where the Israelites could come into the presence of God and offer their worship and sacrifices. It also foreshadows the ultimate fulfillment of God's presence among His people through Jesus Christ, who became the ultimate sacrifice and made a way for people to come directly into the presence of God.

Overall, Exodus 38:21 serves as a reminder of the careful attention and reverence required in matters of faith and worship. It underscores the importance of following God's instructions and the need for order and structure in the service of God. It also points to the symbolical significance of the tabernacle as the dwelling place of God among His people.