Agree with @lindencat regarding that the "passing" is our death (or if you prefer the end of our life). I think it also touches on living with regrets, or at least ensuring you don't die with regrets; the verse below I believe is dealing with regrets / speaking true whilst alive because too late when you are dead.
I can't move can't turn back
Out of reach my heart is black
My silent shout
Won't set me free
And time is passing me by
Agree with @lindencat regarding that the "passing" is our death (or if you prefer the end of our life). I think it also touches on living with regrets, or at least ensuring you don't die with regrets; the verse below I believe is dealing with regrets / speaking true whilst alive because too late when you are dead.
I can't move can't turn back Out of reach my heart is black My silent shout Won't set me free And time is passing me by