For his defiance, Chu was arrested in February 1938 and taken into prison, where he was
tortured until he was released months later. After his release, Chu defended his views in a sermon called "Determination for Death" in September 1938. In it, he explained that his conviction was based on faith, not nationalism. His opposition was based in his conservative theology and its implications on his thinking about idolatry. That same month Chu was arrested again, briefly, to keep him out of the general assembly of the
Korean Presbyterian Church that the Japanese authorities forced to accept Shinto practice. He continued his protest and was subsequently jailed two more times. His time in prison totaled five years. In February 1939, Chu was allowed to pay a visit to his home and his church for three days. During this time, he gave a sermon entitled "My Five Fold Prayer". Although thoroughly conservative in theology, this sermon has been interpreted as a radical nationalist outburst in South Korea. In August 1940, a Japanese pastor dispatched by the government gave a speech in Chu's Sanjunghyun Church. He claimed that Christians worshiping at Shinto shrines was not a sin. Chu confronted the pastor, embarrassing him greatly. The Japanese retaliated, ordering the to relieve him of his pastoral duties and expel his family from church property. Chu was imprisoned for the last time; the charges were treason and breaching the
Maintenance of the Public Order Act. After his death the Sanchonghyon Church was closed down by the Japanese authorities. He was tortured again. Torture left him weakened and he died in
Pyongyang Prison's medical ward on 21 April 1944. His last words were "God of my soul, hold me firm." Chu was buried in a public cemetery in Pyongyang. ==Legacy==