Isaiah 21:12 in the King James Version of the Bible says, "The watchman said, The morning cometh, and also the night: if ye will enquire, enquire ye: return, come."

This verse comes from a section of Isaiah that contains prophecies against Babylon and Edom. In this particular verse, the watchman is delivering a message to the people, warning them that both morning and night are coming. This can be seen as a metaphor for both blessings and judgments from God.

The watchman in this verse is a symbol of someone who is vigilant and constantly on the lookout for signs and events. In ancient times, a watchman would stand guard at the city walls, alerting the inhabitants to any approaching danger or news. In the context of this verse, the watchman is delivering a message to the people, urging them to be aware of the coming times and to seek guidance and understanding.

The concept of morning and night in this verse represents the duality of life. Morning is often associated with hope, new beginnings, and blessings, while night can symbolize darkness, judgment, and hardship. The message here is that both morning and night are a certainty in life, and the people must be prepared for both.

The phrase "if ye will enquire, enquire ye" emphasizes the importance of seeking understanding and wisdom. The people are urged to ask questions, seek truth, and not passively accept the events that are to come. This encourages an active and thoughtful approach to life, rather than a passive acceptance of circumstances.

The repetition of the word "return, come" at the end of the verse can be interpreted as a call to repentance and a turning back to God. The people are being prompted to return to a place of righteousness and faith, and to come to God for guidance and support.

Overall, this verse contains a message of warning, encouragement, and guidance. It speaks to the constant tensions and dualities of life, and the need for vigilance and seeking understanding. It also emphasizes the importance of returning to God and seeking His guidance in times of uncertainty.

In a broader theological context, this verse can be seen as a reminder of God's sovereignty and the inevitability of both blessings and judgments. It speaks to the cyclical nature of life, and the need for faith and repentance in the face of changing times.

In conclusion, Isaiah 21:12 in the King James Version of the Bible contains a rich and complex message that speaks to the duality of life, the need for vigilance and understanding, and the call to return to God. Its themes are universal and timeless, offering guidance and encouragement to readers across generations.