In the reaction$2{\text{FeCl}}_3+{\text{H}}_2\text{S}\to 2{\text{FeCl}}_2+2\text{HCl}+\text{S}$

Both  ${\text{FeCl}}_{\text{3}}$ and  ${\text{H}}_{\text{2}}\text{S}$are oxidizing agents

${\text{FeCl}}_{\text{3}}$ is oxidised while  ${\text{H}}_{\text{2}}\text{S}$ is reduced

${\text{H}}_{\text{2}}\text{S}$acts as an oxidising agent

${\text{FeCl}}_{\text{3}}$ acts as an oxidising agent