John 20:30 New English Translation

³⁰Now Jesus performed^[a] many other miraculous signs in the presence of the^[b] disciples, which are not recorded^[c] in this book.^[d]

John 20:30 tn Or “did.”
John 20:30 tc ‡ Although most mss, including several significant ones (P⁶⁶ א C D L W Θ Ψ ƒ^1,13 33 M lat), read αὐτοῦ (autou, “his”) after τῶν μαθητῶν (tōn mathētōn, “the disciples”), the pronoun is lacking in A B K Δ 0250 al. The weight of the witnesses for the inclusion is somewhat stronger than that for the exclusion. However, the addition of “his” to “disciples” is a frequent scribal emendation and as such is a predictable variant. It is thus most likely that the shorter reading is authentic. NA²⁸ puts the pronoun in brackets, indicating doubts as to its authenticity.
John 20:30 tn Grk “are not written.”
John 20:30 sn The author mentions many other miraculous signs performed by Jesus in the presence of the disciples, which are not written in the Gospel. What are these signs the author of the Gospel has in mind? One can only speculate. The author says they were performed in the presence of the disciples, which emphasizes again their role as witnesses (cf. 15:27). The point here is that the author has been selective in his use of material. He has chosen to record those incidents from the life and ministry of Jesus which supported his purpose in writing the Gospel. Much which might be of tremendous interest, but does not directly contribute to that purpose in writing, he has omitted. The author explains his purpose in writing in the following verse.

New English Translation (NET)