Likeminded (isopsuchon). Old, but very rare adjective (isos, psuchē), like isotimos in 2Pe 1:1. Only here in N.T. Likeminded with Timothy, not with Paul.
Truly (gnēsiōs). “Genuinely.” Old adverb, only here in N.T., from gnēsios (Phi 4:3), legitimate birth, not spurious.