There are those who say that "to lay down my life" in John 10 does not refer to Jesus' death. They point to I John 3:16 as proof - that since we are to lay down our lives for our brothers as Jesus did for us it cannot mean death as we are not asked to die for each other. Here was my response in that thread (slightly edited for use here). Feel free to respond:
The concept of "laying down one's life" in John's writings (John 10 and I John 3) involves using the term "to lay down" in a metaphorical sense, and thus the exact meaning would have to be determined by the context. The most obvious meaning in John 10 is to "sacrifice" - the extent of that sacrifice would, again, be determined by the context in which it is used. Since the extent of Jesus' sacrifice as the Servant of God (as in Isaiah; see especially Isaiah 53 where the concept of "offering for sin" is central) was unto death, I do not see how one can categorically say it does not mean death. John 10:17-18 seems to clearly point to Christ's death and resurrection. Just because we might not need to sacrifice unto death for our brother does not mean that John did not have Christ's willingness to die [and more, for He in fact did die] for us in mind in I John 3. The example of love given seems to fit perfectly well with the idea that Jesus sacrificed His life for us, and so we ought to sacrifice our life for our brothers. The sacrifice or laying down could never be the same in our case as it was for Jesus whether we understand "laying down" as death or not. It is possible, and I would say probable, that in John's writings this term does include the death of Christ on our behalf. As Mark says, "For the Son of Man did not come to be served, but to serve, and to give His life a ransom for many" (10:45). The "giving" and the "laying down" very well could be describing the same type of sacrifice, one unto death. That the same term is not used in John as in Mark seems immaterial, for they often used different terms to convey the same concepts. Just as Jesus came to serve, and that service resulted in His death, so He came to lay down his life for us, and that involved His death on our behalf.
As for John's use of this term, see also: John 13:37-38; 15:13. John 13 certainly seems to point to a use that includes death. John 15, as in the other references, certainly can include His death as revealing the extent of His love and sacrifice for us.
The concept of "laying down one's life" in John's writings (John 10 and I John 3) involves using the term "to lay down" in a metaphorical sense, and thus the exact meaning would have to be determined by the context. The most obvious meaning in John 10 is to "sacrifice" - the extent of that sacrifice would, again, be determined by the context in which it is used. Since the extent of Jesus' sacrifice as the Servant of God (as in Isaiah; see especially Isaiah 53 where the concept of "offering for sin" is central) was unto death, I do not see how one can categorically say it does not mean death. John 10:17-18 seems to clearly point to Christ's death and resurrection. Just because we might not need to sacrifice unto death for our brother does not mean that John did not have Christ's willingness to die [and more, for He in fact did die] for us in mind in I John 3. The example of love given seems to fit perfectly well with the idea that Jesus sacrificed His life for us, and so we ought to sacrifice our life for our brothers. The sacrifice or laying down could never be the same in our case as it was for Jesus whether we understand "laying down" as death or not. It is possible, and I would say probable, that in John's writings this term does include the death of Christ on our behalf. As Mark says, "For the Son of Man did not come to be served, but to serve, and to give His life a ransom for many" (10:45). The "giving" and the "laying down" very well could be describing the same type of sacrifice, one unto death. That the same term is not used in John as in Mark seems immaterial, for they often used different terms to convey the same concepts. Just as Jesus came to serve, and that service resulted in His death, so He came to lay down his life for us, and that involved His death on our behalf.
As for John's use of this term, see also: John 13:37-38; 15:13. John 13 certainly seems to point to a use that includes death. John 15, as in the other references, certainly can include His death as revealing the extent of His love and sacrifice for us.