Though the OP is focused on the sacrifice, it is the resurrection that sets it apart from any sacrifice before or ever. In the following verse Jesus remarks that no man can or will take His life.
John 10:18: "No man taketh it (His life) from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father."
The context of these remarks is important: Jesus is still debating with religious critics who are angry over His recent miracle (John 9). There, Jesus gave sight to a man born blind, which sparked debates that did not end well for the local religious leaders.
Jesus continues to explain His role as "the Good Shepherd," which includes His willingness to die for the sake of His sheep. That sacrificial love, Jesus says, is a reason He has special favor with God the Father (John 10:17; Philippians 2:9). It's possible, in some sense, that those listening might have assumed Jesus prior statement was just an assumption. In other words, that Jesus was "willing" to die, not that He "would die." Talk of Christ's death is something Jesus' closest followers often struggled to accept (Mark 8:31–33).
Jesus makes it clear that His role as "the Good Shepherd" (John 10:10–14) and "the Door" (John 10:7–9) not only includes an actual death, it also includes resurrection. That death is entirely voluntary—it is not something into which Jesus is being coerced (Matthew 26:53). And it will result in a resurrection, based on divine power and authority (John 2:19–21). In this relatively brief statement, Jesus claims to have power over life and death—even His own—as granted to Him by God. He predicts His own death and revival.