The book of Revelation applied the title "Lamb" twenty-eight times to the Lord Jesus Christ. John consistently uses the Greek word "arnion" for "Lamb" in the book. The article discusses the suitability of this.
Isaiah 53:7 speaks about Christ as the lamb, foreshadowing His death on the cross as He secured forgiveness for sinners. This chapter also speaks about Christ's silence, showing His obedience as He bore our guilt.