2:4

Woman or gunai has no harshness or disrespect in the vocative form

C. K. Barrett, p159

gunai has caused needless perplexity. While it is an unusual mode of address to one's mother, it also may be affectionate.

Beasley-Murray, p 34

Jesus response shows depths of feeling and earnestness in him. It was the customary style of address for the time.

Lipscomb p 36

Mary probably failed to realize adequately that since her Son had left home (some months before) something had happened which must make a difference to their former relationship. He had been anointed with the Holy Spirit and had received power to undertake the special work which his Father had given him to do. Now that, after the long 'silent years' at Nazareth, he had entered on his public ministry, everything (including family ties) must be subordinated to this... When the NEB makes him say 'Your concern, mother, is not mine', it misses the point, which is that 'mother' is precisely what he did not call her. If she sought his help now, she must not seek it on the bais of their mother-and-son relationship.

F.F. Bruce p 69

15:2

He removes every branch in me that does not produce fruit, and he prunes every branch that does produce fruit, to make it produce more fruit.

There are plays on words in the Greek that cannot easily be reproduced in English'; 'he removes' is airei and 'he prunes' is kathairei. Moreover, kathairei can also mean ' he cleanses' and is linked with 'clean' in verse 3: 'you are kathairei. Here is an echo of John 13:10, 'you are clean (kathoaroi), but not all'. Judas was the exception then; in terms of the present parable, he is an unfruitful branch that has to be removed.

The Gospel of John, F.F. Bruce p.308