The NT identifies a variety of witnesses to Jesus Christ, who confirm his identity and importance. It also stresses the importance of believers bearing witness to Christ in the world.
The witness of the OT
See also
The witness of John the Baptist
pp Mk 1:7-8
pp Lk 3:15-18
The witness of the Holy Spirit
The witness of the Father
pp Mk 1:11
pp Lk 3:22
pp Mk 9:7
pp Lk 9:35
The witness of Jesus Christ to himself
The witness of Jesus Christ's miracles
The witness of the first Christians
Commissioned by Jesus Christ
The cost of being a witness to Jesus Christ:
The commissioning of Paul:
The witness of converts