Some observations from Philip Comfort's book:New Testament Text And Translation Commentary.
3:1a
WH NU : who bewitched you?
var/TR : who bewitched you that you should not obey the truth?
"The WH NU reading has better manuscript support than what is behind TR." (p.564)
3:1b
WH NU : Christ was portrayed as having been crucified
var/TR : Christ was portrayed as having been crucified among you
"The manuscript evidence (both early and diverse) for the WH NU reading is vastly superior to that for TR." (p.564)
4:6b
WH NU : our hearts
var/TR : your hearts
Comfort says the Greek word for our has superior documentation and your is "an obvious assimilation to the immediate context." (p.567)
4:26
WH NU : our mother
var/TR WH : mother of us all
"The documentation behind the WH NU reading is impressive,having support from the four earliest manuscripts..." (p.570)
4:28
NU : but you,brothers..are
var/TR WH : but we,brothers...are
"The testimony of P46B D* is sufficiently weighty to show that the reading of the NU text is original..." (p.570)
5:19
WH NU : fornication (or:sexual immorality)
var/TR : adultery,fornication
The insertion is a scribal attempt at harmonization. Documentary evidence is with WH NU. (p.571)
5:21
WH NU : envyings,drunkennesses
var/TR : envyings,murders,drunkennesses
Another attempted harmonization. However,the manuscript support goes against this. (p.571,572)
3:1a
WH NU : who bewitched you?
var/TR : who bewitched you that you should not obey the truth?
"The WH NU reading has better manuscript support than what is behind TR." (p.564)
3:1b
WH NU : Christ was portrayed as having been crucified
var/TR : Christ was portrayed as having been crucified among you
"The manuscript evidence (both early and diverse) for the WH NU reading is vastly superior to that for TR." (p.564)
4:6b
WH NU : our hearts
var/TR : your hearts
Comfort says the Greek word for our has superior documentation and your is "an obvious assimilation to the immediate context." (p.567)
4:26
WH NU : our mother
var/TR WH : mother of us all
"The documentation behind the WH NU reading is impressive,having support from the four earliest manuscripts..." (p.570)
4:28
NU : but you,brothers..are
var/TR WH : but we,brothers...are
"The testimony of P46B D* is sufficiently weighty to show that the reading of the NU text is original..." (p.570)
5:19
WH NU : fornication (or:sexual immorality)
var/TR : adultery,fornication
The insertion is a scribal attempt at harmonization. Documentary evidence is with WH NU. (p.571)
5:21
WH NU : envyings,drunkennesses
var/TR : envyings,murders,drunkennesses
Another attempted harmonization. However,the manuscript support goes against this. (p.571,572)