Isaiah 55:1 follows a view of the cross in chapter 53, and the promised restoration on Israel in 54. In this chapter 55 verse 5 a different nation is seen running to Israel’s Savior, a gentile people called by grace.
We are poor, hungry, and thirsty, while we have no means to provide for our own needs: so in mercy God gives it!
Yet there is also a warning in verse 6 to respond when God is near. Please do not ignore this space for grace!