Our own <1,,1438, heauton>
is sometimes used as a reflexive pronoun of the 1st person plural, signifying "our own selves," translated "our own" in 1Th 2:8, lit., "(the souls) of ourselves."
<2,,2398, idios>
"one's own," signifies "our own" in Act 3:12, 1Co 4:12; in Act 2:8, with hemon, forming a strong possessive, lit., "each in his own language of us."
