What does it mean that Jesus' blood is shed for many?

The phrase 'shed for many' in Mark 14:24 implies a significant distinction between Christ's atoning work for the elect compared to a universal application. This reflects the Reformed understanding of particular redemption, confirming that Christ’s blood adequately paid for the sins of those chosen by God to be His people. It reassures believers that their salvation is secure because Jesus’ sacrifice was intentionally aimed at them as part of God's sovereign plan. Thus, it provides enormous comfort to the Christian, affirming that their faith rests not in their actions, but entirely in Christ’s completed work, securing their place in His covenant.