What is the significance of the phrase 'all the ends of the earth' in Isaiah 45:22?

In Isaiah 45:22, when God invites 'all the ends of the earth' to look unto Him for salvation, it signifies the universal scope of the gospel. This declaration highlights that God's elect, scattered among various nations and tribes, are included in His redemptive plan. It affirms that salvation is available to every sinner who looks to Christ in faith, regardless of prior sin or position. This notion combats ideas of exclusivity based on race or culture, reinforcing that the one true God desires that all His chosen people come to Him.