Do not fear, for I am with you; do not be afraid, for I am your God. I will strengthen you; I will surely help you; I will uphold you with My righteous right hand.
These words come in the middle of Isaiah's later chapters, spoken to Israel as a people far from home, in exile or facing it. Just before, the nations gather and encourage one another as craftsmen nail idols in place. God answers with a different picture: He has chosen Israel, calls them His servant, and takes hold of their hand.
Isaiah, chapter 41. The words of the prophet Isaiah, with warnings to Judah and many promises of comfort and restoration.