Cooperation, meaning collaboration between people who assist each other to achieve common goals, is argued to be one of Jesus’ major normative themes. This proposal has not previously been made in Christian ethics. Jesus’ emphasis on cooperation occurs within His major undertaking, His practice of obedience to God. Outlined initially is the meaning of cooperation that aims for mutual help and partnership with others in a friendly, trusting and harmonious alliance. Following that, Jesus’ teachings relating to cooperation are assessed, as (...) interpreted by Biblical exegetes. These teachings include the Golden Rule, Jesus’ admonitions for forgiveness, the need for generosity, required relations between His disciples, and Jesus’ healings. In the penultimate section, objections to the extension of Jesus’ teachings on cooperation in the modern world are found to be unpersuasive. (shrink)