What does it mean that Christ paid it all?

The phrase 'Christ paid it all' encapsulates the essence of the gospel. As outlined in Isaiah 55:1, the invitation to come and partake of God's provisions is possible because Christ has paid the ultimate price for our sins. This highlights the concept of substitutionary atonement, where Jesus, as the sinless Lamb of God, bore the guilt and punishment of His people on the cross. Historic Reformed theology asserts that salvation is entirely by grace through faith in Christ, separate from our works. Hence, when we come to Him, we do so acknowledging that our righteousness is insufficient, and His perfect obedience and sacrifice are what redeem us.