Isaiah 43:16-19 (KJV) is a powerful passage that speaks to the sovereignty and power of God, as well as His ability to bring about redemption and transformation in the lives of His people. The passage reads:

"Thus saith the Lord, which maketh a way in the sea, and a path in the mighty waters; Which bringeth forth the chariot and horse, the army and the power; they shall lie down together, they shall not rise: they are extinct, they are quenched as tow. Remember ye not the former things, neither consider the things of old. Behold, I will do a new thing; now it shall spring forth; shall ye not know it? I will even make a way in the wilderness, and rivers in the desert."

The passage begins with a declaration of God's power and sovereignty, as He is the one who "maketh a way in the sea, and a path in the mighty waters." This imagery calls to mind the Israelites' deliverance from Egypt through the parting of the Red Sea, demonstrating God's ability to make a way where there seems to be no way. This sets the tone for the rest of the passage, as it establishes God as the one who is able to overcome the seemingly insurmountable obstacles in the lives of His people.

The next verse continues to emphasize God's power, stating that He is the one who brings forth chariots, horses, armies, and power, and yet they are ultimately powerless in the face of His might. This imagery is reminiscent of the destruction of Pharaoh's army in the Red Sea, as God demonstrates His ability to defeat even the most formidable of foes.

The following verses shift the focus to the future, as God exhorts His people to "remember not the former things, neither consider the things of old." This serves as a reminder that God is not limited by the past, but is instead capable of doing new and amazing things. This idea is further emphasized in the following verse, where God declares, "Behold, I will do a new thing; now it shall spring forth; shall ye not know it?" This new thing that God promises to do is not bound by the limitations of human understanding or expectation, as it is something that will spring forth and manifest itself in ways that may be unexpected or unfamiliar to His people.

Finally, God assures His people that He will make a way in the wilderness and rivers in the desert. This imagery of wilderness and desert symbolizes the barrenness and desolation of the obstacles and challenges that His people may face. God's promise to make a way in the wilderness and rivers in the desert communicates his ability to bring life, sustenance, and transformation in the midst of seemingly impossible circumstances.

Overall, Isaiah 43:16-19 (KJV) speaks to the themes of God's power, sovereignty, redemption, and transformation. The passage provides encouragement to the reader, assuring them that God is capable of overcoming any obstacle or challenge, and that He is able to bring about new and amazing things in their lives. The context of this passage is rooted in the history of the Israelites, particularly their deliverance from Egypt and their journey through the wilderness to the Promised Land. However, the themes and messages contained within this passage are timeless and relevant to believers of all generations.

In conclusion, Isaiah 43:16-19 (KJV) is a powerful and encouraging passage that reminds believers of God's ability to overcome any obstacle, bring about redemption and transformation, and do new and amazing things in their lives. The imagery and language used in this passage are rich with symbolism and meaning, serving to convey the profound and timeless truths of God's power and sovereignty. This passage continues to be a source of hope and encouragement for believers, as it reminds them of God's faithfulness and ability to bring about new and wonderful things in their lives.