Receiving (komizomenoi). Present middle participle of komizō, old verb, to receive back, to get what is promised (1Pe 5:4; Heb 10:36).
The end of your faith (to telos tēs pisteōs). The conclusion, the culmination of faith (2Co 3:13; Rom 2:21.; Rom 10:4). See Heb 12:2 of Jesus as “Pioneer and Perfecter of Faith.”
Even the salvation of your souls (sōtērian psuchōn). No “even” in the text, just the accusative of apposition with telos, viz., final salvation.