So how does one know he is saved? He believes the Gospel as revealed in Scripture, putting no confidence in the flesh and trusting only in Christ, his righteous surety who died that he might live eternally, the only true object of saving faith. He has promised to raise believers up on the last day, to never leave them alone, to go and prepare a place for that where He is, His people may be also. All confidence is placed in Christ alone. This is a biblical profession of faith. If a man testifies to this saving Gospel, he is a brother in Christ, having “passed from death unto life.”
Will God comfort His people? Can believers have assurance of faith? Will God deal with the wicked? These are the major questions addressed by this portion of Isaiah’s prophecy. Isaiah assures the people of God that “In that day” God’s purpose and will shall unfold in full and complete perfection. In That Day, writes Isaiah, God provides comfort for His people. In That day, God shall assure His People. And in that day, God shall judge the wicked.