On a straightforward level, the "least one" refers to the people of Israel. At the time Isaiah was writing, Israel was small, vulnerable, and marginalized among the great civilizations of the world.
BibleAnalysis.org is a comprehensive resource dedicated to exploring the deep truths of Scripture through thoughtful questions, insightful answers, and in-depth blog posts.
On a straightforward level, the "least one" refers to the people of Israel. At the time Isaiah was writing, Israel was small, vulnerable, and marginalized among the great civilizations of the world.