John 5:30
'I have testimony weightier than that of John. For the very work that the Father has given me to finish—and these are signs the Father has given me to accomplish—testify that the Father has sent me. — Jesus claims his works (erga) as greater testimony than John. The works (miracles/signs) are given by the Father (tetheiken) to validate Jesus' mission. The divine authorization of signs authenticates his claim.