Contradiction with John 13:27
While Matthew 26:48 describes Judas identifying Jesus with a kiss, John 13:27 states that Jesus identified the betrayer himself by giving Judas a sop, suggesting Jesus was aware and in control of identifying the betrayer, which contradicts the need for Judas's signal.
John 13:27: And after the sop Satan entered into him. Then said Jesus unto him, That thou doest, do quickly.
Paradox #1
The contradiction in Matthew 26:48 could be seen in the act of betrayal disguised as an act of friendship. Judas uses a kiss, a sign of greeting and affection, to identify Jesus for arrest. This action presents a conflict between the outward gesture of love and the inner intention of betrayal.