rwp@1John:5:16 @{If any man see} (\ean tis idi\). Third-class condition with \ean\ and second aorist active subjunctive of \eidon\ (\hora\). {Sinning a sin} (\hamartanonta hamartian\). Present active predicate (supplementary) participle agreeing with \adelphon\ and with cognate accusative \hamartian\. {Not unto death} (\m pros thanaton\). Repeated again with \hamartanousin\ and in contrast with \hamartia pros thanaton\ (sin unto death). Most sins are not mortal sins, but clearly John conceives of a sin that is deadly enough to be called "unto death." This distinction is common in the rabbinic writings and in kjv@Numbers:18:22| the LXX has \labein hamartian thanatphoron\ "to incur a death-bearing sin" as many crimes then and now bear the death penalty. There is a distinction in kjv@Hebrews:10:26| between sinning wilfully after full knowledge and sins of ignorance (Hebrews:5:2|). Jesus spoke of the unpardonable sin (Mark:3:29; kjv@Matthew:12:32; kjv@Luke:12:10|), which was attributing to the devil the manifest work of the Holy Spirit. It is possible that John has this idea in mind when he applies it to those who reject Jesus Christ as God's Son and set themselves up as antichrists. {Concerning this} (\peri ekeins\). This sin unto death. {That he should make request} (\hina ertsi\). Sub-final use of \hina\ with the first aorist active subjunctive of \erta\, used here as in kjv@John:17:15,20| (and often) for request rather than for question. John does not forbid praying for such cases; he simply does not command prayer for them. He leaves them to God.