A.T. Robertson Commentary Philippians 2:28

"I have sent him therefore the more diligently, that, when ye see him again, ye may rejoice, and that I may be the less sorrowful." — Philippians 2:28 (ASV)

Ye may rejoice (χαρητε). Second aorist passive subjunctive with ινα in final clause of χαιρω, to rejoice.

That I may be the less sorrowful (καγω αλυποτερος ω). Present subjunctive with ινα and comparative of old compound adjective αλυπος (α privative and λυπη, more free from grief). Beautiful expression of Paul's feelings for the Philippians and for Epaphroditus.