"Faith is taking the first step" suggests that faith is an active decision to move forward, to initiate action, or to make a choice without complete knowledge or certainty.
"Even when you can't see the whole staircase" emphasizes that faith often operates in situations where the future is not fully visible or understood. It implies that faith involves trust and belief in the process or journey, even if the destination is not yet clear.
In essence, this quote encourages individuals to have faith in their own abilities, the journey they are undertaking, or the decisions they are making, even when they cannot predict or see the complete outcome. It underscores the courage and determination required to take that first step into the unknown.