MCamp, Jesus observed Passover. He could not have done so with out participating the sacrifice. He followed all of God's laws, thus He was without sin. He was baptized, not because He was a sinner but to fulfill all righteousness. Just because the scripture doesn't say He participated in the sacrifices it doesn't mean that He didn't. Our dear brother John said that if everything that Jesus did was recorded then the whole world could not contain the books that would be written.