The Deliverance of Pskov
In February 1570, having ravaged Novgorod on suspicion of treason, Ivan the Terrible advanced on Pskov with the same intent. During the siege Nicholas confronted the tsar. By the account of the synaxarion, when Nicholas offered him raw meat during the Lenten fast and Ivan refused it, the saint answered, 'But you drink human blood,' exposing the tsar's violence.
Tradition also relates that Nicholas ran toward the tsar astride a stick as though riding a horse, crying out that he should eat the bread and salt of the people but not the blood of Christians. The synaxarion records that Nicholas prophesied the tsar's horse would fall dead if he did not leave; when Ivan ordered the removal of a cathedral bell, the prophecy was fulfilled. Frightened by its fulfillment, Ivan ordered an end to the looting and withdrew from the city.
Veneration
Nicholas was buried within the Holy Trinity Cathedral, an honor that according to tradition had previously been granted only to the princes of Pskov and later to hierarchs. Local veneration of the saint is said to have begun within a few years of his death; he is numbered among the Pskov Saints invoked during the city's later defense against Polish forces in 1581.