He represented Magnesia in National Assemblies of Epidaurus and Astros and worked in commissions regarding military affairs and education.

He continued his education in the Old School of Rigas in Zagora, where he studied logic, astronomy, philosophy, Greek philology, geography, natural sciences and mathematics.

Zagora was well developed economically owing to its booming silk industry; unlike other areas of Greece its citizens had the right to bear arms and enjoyed a degree of relative autonomy.

Gazis soon befriended a merchant named Aggelis Mammaras of Makrinitsa who urged him to leave for Vienna after covering his expenses.

In 1800, Gazis reissued an edited version of Rigas Feraios' Charta of Greece; dimensions were cut in half and Jean-Denis Barbié du Bocage's topographical plans were removed.

Its goals were the propagation of education in Greece, providing funds for poor students, publishing works of classical literature and the preservation of antiquities.

He developed a lively correspondence with German classicist Friedrich Thiersch, who in turn assisted Greek students in enrolling into Bavarian universities.

The Austrian intelligence service took note of Gazis' activities in the Filomousos Eteria as well as his close relationship with the Russian community in Vienna, ordering his surveillance.

In the spring of 1817, he traveled east through the Danubian Principalities to Odessa where he met the leadership and after some hesitation joined Filiki Eteria, a secret organization tasked with overthrowing Ottoman rule of Greece and replacing it with an independent Greek state.

In March 1818, he was visited by Athanasios Tsakalov who proposed relocating the leadership of Filiki Eteria to Pelion, Gazis disagreed, claiming that the Mani Peninsula would be a better choice and thus the plan did not materialize.

His most notable success was the initiation of Pilion armatolos Kyriakos Bastekis and Makrinitsa head kodjabashi Hatzi Rigas.

A white flag bearing five red crosses and topped with a sun was unveiled, while Gazis read a letter written by Alexander Ypsilantis.

Attempts to storm the castle failed as the rebels only possessed a single rusty cannon, while human wave attacks proved sanguine.

A second meeting (styled Boule of Thessalo–Magnesia) took place in Velestino where Gazis officially declared the beginning of the insurrection to the representatives of the 24 villages surrounding Pilion, calling for the Christians of Thessaly to rise against the Ottomans.

The situation in the village became tense when local kodjabashi Stavrakis Morfoulis, attempted to shoot Gazis after exclaiming "Damn you, you doomed us all!".

The island housed significant numbers of refugees from Thessaly, who had resorted to selling their clothes and jewelry for minuscule portions of food.

For the next thirteen months Gazis provided logistical support to insurgents on Euboea and obstructed Turkish efforts to send supplies to their garrisons in Morea.

During that time Gazis and Konstantas presented a draft proposing the creation of an academy in Argos named Protypon Didaktirion.

In letter to Georgios Kountouriotis, he complained about the fortunes that corrupted officials had amassed in the confusion of the revolution, while his personal contribution to the sustenance of Greek army had been all but forgotten.