The first diamond Martha gets is Jesus' revelation of Himself: I am the resurrection and the life.
The second diamond Martha gets is her invitation to participate in Diamond #1 by belief. This is the associative Christianity that we get to enjoy. Jesus flat out challenges her: do you believe this? And how about you, dear listener?
DO YOU BELIEVE THIS? If so, come back tomorrow
DO YOU BELIEVE THIS.? If not yet, Come back tomorrow.
https://youtu.be/5yqn8HnlN6U