Paul defends his ministry by responding to his enemies’ accusations. His ministry is a pure gift and, therefore, carries responsibility (cf. 1 Tim 2:5). The honesty and responsible sincerity he mentioned earlier are contrasted with two tactics: hiding with shame and twisting truths with cunning. Paul continues his defense by affirming that he does not promote himself but Christ, and that his ministry is one of service, carried out in humility, poverty, and suffering. It is a ministry without human glamour or prestige.