To open (anoixai). First aorist active infinitive of purpose.
That they may turn (tou epistrepsai). Another infinitive of purpose first aorist active (genitive case and articular), epexegetic to anoixai.
That they may receive (tou labein). Another genitive articular infinitive of purpose subordinate (epexegetic) to tou epistrepsai.
Sanctified by faith in me (hēgiasōmenois pistei tēi eis eme). Perfect passive participle of hagiazō, instrumental case of pistei, article before eis eme (“by faith, that in me”). These important words of Jesus to Paul give his justification to this cultured audience for his response to the command of Jesus. This was the turning point in Paul’s career and it was a step forward and upward.