Exodus 9:21 in the King James Version of the Bible reads, "And he that regarded not the word of the Lord left his servants and his cattle in the field." This verse is part of the story of the ten plagues that God brought upon Egypt in order to compel Pharaoh to release the Israelites from their enslavement.

The context of this verse is significant, as it comes at a pivotal moment in the narrative of the Exodus. Up to this point, Pharaoh had refused to heed the warnings and demands of God, and had hardened his heart against letting the Israelites go. This refusal had led to a series of devastating plagues, including the turning of the Nile River to blood, the proliferation of frogs, gnats, and flies, the death of livestock, boils, hail, locusts, darkness, and the death of the firstborn sons of Egypt.

In this particular verse, God warns the people of Egypt that those who do not take heed to His word will suffer the consequences. Those who reject the word of the Lord will leave their servants and their cattle in the field, exposed to the impending plague. This can be seen as a final warning to the people of Egypt, urging them to heed God's word and take action to protect themselves and their possessions.

The theme of this verse is one of obedience and consequence. Throughout the story of the ten plagues, Pharaoh's repeated disobedience and stubbornness in the face of God's warnings and demands lead to increasingly severe consequences for himself and his people. The theme of obedience to God's word and the repercussions of disobedience runs throughout the Bible and is a central tenet of the Judeo-Christian faith.

Furthermore, this verse also highlights the importance of heeding divine warnings and taking appropriate action. It can be seen as a demonstration of God's justice and the natural consequences of sin and disobedience. The verse serves as a reminder that God's word is to be taken seriously and that there are real-life consequences for ignoring it.

In terms of symbolism, this verse can be seen as a foreshadowing of the ultimate consequence of sin and disobedience, which is separation from God. The people of Egypt who ignored God's word suffered physically and materially, but those who persistently reject God's word ultimately suffer spiritual separation from Him. The passage also underscores the idea that God is just and fair in His dealings with humanity, and that His warnings are meant to lead to repentance and protection, rather than punishment.

Overall, Exodus 9:21 serves as a powerful and sobering reminder of the importance of heeding God's word and the consequences of disobedience. It underscores the themes of obedience, justice, and consequence that are central to the biblical narrative, and serves as a warning to all who hear it to take heed of God's word and take appropriate action in response.