How do we know that God has a plan for salvation?

The certainty of God's plan for salvation is rooted in the 'zeal of the Lord of hosts,' which Isaiah 9:7 states will accomplish His purposes. This zeal indicates a fervent commitment from God to save His people through Christ's atoning work. From eternity past, God has ordained this plan, demonstrating His dedication to executing it fully. This zeal reflects God's unwavering desire to lead His children to salvation, and it reinforces the assurance that God's promises will be fulfilled.