Let me have joy of thee (egō sou onaimēn). Second aorist middle optative of oninēmi, old verb, only here in N.T. Optative the regular construction for a wish about the future. “May I get profit from thee in the Lord.”
Refresh my heart in Christ (anapauson mou ta splagchna en Christōi). See Phm 1:7 for anapauson (first aorist active imperative of anapauō) and splagchna (3 times in this letter, Phm 1:7, Phm 1:12Phm 1:20).