A genuine faith involves both a grateful recognition of what is given and also a desire to be changed from within and to live accordingly. The people Amos was talking to had plenty of religion — they said their prayers on the Sabbath and offered sacrifices to their God — but this was merely ritual and they had no compunction in exploiting their fellow citizens for the rest of the week. On the other hand, in his writing to the Ephesians Paul is completely overwhelmed by the realisation of what God has done for us for in Christ and he cannot but pour out his thanks and praise. When it comes to being disciples, Jesus asks us to develop a habit of trust. This is not a blind faith but a willingness to really come to know him and be changed from within. It is only then that we can share in his mission.