Isaiah 29:14 in the King James Version of the Bible reads, "Therefore, behold, I will proceed to do a marvellous work among this people, even a marvellous work and a wonder: for the wisdom of their wise men shall perish, and the understanding of their prudent men shall be hid."

This verse comes in the context of a prophecy of judgment against Israel for their disobedience and unfaithfulness to God. The prophet Isaiah is warning the people of Judah about the consequences of their sin and is calling them to repentance. The verse is a part of a larger passage in which the Lord is rebuking the people for their shallow and hypocritical worship, and is warning them of the destruction that will come upon them if they do not turn back to Him.

The verse begins with the word "Therefore," indicating that it is a conclusion drawn from the previous verses. In the context of the passage, God is basically saying, "Because of their unbelief and disobedience, I will move forward to do something miraculous among them." This "marvellous work" that God will do is the judgment that will come upon the people of Judah as a consequence of their sin. It will be a wonder to behold, a display of God's holiness and justice.

The next part of the verse speaks of the wisdom and understanding of the people's wise and prudent men perishing and being hidden. This is a reference to the fact that the people's attempts to rely on their own human wisdom and understanding will fail them. Their leaders and scholars, who are esteemed for their knowledge and understanding, will find that their wisdom is obsolete in the face of the judgment that God will bring upon the nation. Their understanding will be "hid" or obscured, as God's ways and thoughts are higher than human ways and thoughts.

The larger theme of this verse and passage is the sovereignty of God and the futility of human wisdom apart from Him. The people of Judah had strayed from the Lord and sought to rely on their own understanding, but this verse reminds them that God's ways are ultimately far above their own. This is a timeless truth that applies to all people in all times - we cannot rely on our own wisdom and understanding, but must instead seek God and His wisdom in all things.

Symbolically, this verse also points to the coming of Jesus Christ and the new covenant that He would establish. The "marvellous work" that God would do among the people would ultimately be the work of redemption and salvation through Jesus. The wisdom and understanding of the wise and prudent men would be eclipsed by the wisdom of God revealed in Christ, as Paul writes in 1 Corinthians 1:25, "Because the foolishness of God is wiser than men; and the weakness of God is stronger than men."

In conclusion, Isaiah 29:14 in the King James Version of the Bible is a powerful reminder of God's sovereignty and the futility of human wisdom apart from Him. It serves as a warning to the people of Judah to repent and turn back to God, and points to the ultimate fulfillment of God's marvellous work in Christ. It is a timeless reminder for all people to seek God's wisdom and understanding, rather than relying on their own.