John 3:11
Very truly I tell you, we speak of what we know, and we testify to what we have seen, but still you people do not accept our testimony — Jesus' shift to plural ("we speak...we testify") may indicate community testimony (disciples, believers) or Jesus' unity with the Father. The claim to knowledge grounded in direct perception ("what we have seen") asserts authority beyond argumentation. The rejection despite testimony introduces the Gospel's tragic theme: truth offered, truth rejected.