Isa 30:1 “Ah, stubborn children,” declares the LORD, “who carry out a plan, but not mine, and who make an alliance, but not of my Spirit, that they may add sin to sin;
Throughout the Bible there is a reoccurring theme of people’s rejections of God’s plan and an implementation of their own. God laments Israel departing from His plan. In Isaiah 30, in exasperation, God reminds Israel of His work on their behalf in Egypt.
This verse overturns ideas of divine meticulous control of all events. Far from God controlling all things, God is thwarted. The people go their own way, and not God’s.