For three years., Isaiah walked without his outer garments. That is he stripped off his clothes to dress like a slave or a mourner dressed in sackcloth. The prophet did this to proclaim that the Egyptians and the Ethiopians would be crushed and treated like poor prisoners of war when Assyria took them captive. The purpose was the warn Judah not to make an alliance with Egypt, but to have a Covenant only with the Most High, This is applicable to us too.

Many seek help from people who cannot help them because they themselves are also living in spirtitual bondage. Therefore, the Only One who can take them out of the situation they are in is God. Therefore, those who make a Covenant with him are overcomers.