From the LCMS website:
Clement (ca. A.D. 35–100) is remembered for having established the pattern of apostolic authority that governed the Christian Church during the first and second centuries. He also insisted on keeping Christ at the center of the Church’s worship and outreach. In a letter to the Christians at Corinth, he emphasized the centrality of Jesus’ death and resurrection: “Let us fix our eyes on the blood of Christ, realizing how precious it is to His Father, since it was poured out for our salvation and brought the grace of repentance to the whole world” (1 Clement 6:31). Prior to suffering a martyr’s death by drowning, he displayed a steadfast, Christ-like love for God’s redeemed people, serving as an inspiration to future generations to continue to build the Church on the foundation of the prophets and apostles, with Christ as the one and only cornerstone.