This sermon examines the narrative of Judas Iscariot's betrayal in Luke 22, identifying five distinct marks of ultimate betrayal: plotting instead of worship, being filled with Satan rather than the Spirit, seeking to betray rather than proclaim, pursuing profit rather than service, and seeking opportunity for evil. The exposition highlights the severity of this sin, noting that Judas was an apostle who had walked closely with Jesus, yet his actions revealed a hard, unbelieving heart. The message contrasts this with the experience of Peter, who also failed but was restored because his heart retained a genuine love for Christ. The central challenge is for listeners to examine their own spiritual condition, distinguishing between surface-level religiosity and a true, abiding love for Jesus that provides assurance and restoration.