They will, in God's time and in his way. It should not, however, be our concern. God is to be trusted to act justly without demonstrating his justice to us here and now. I do not wish to dodge the difficult questions. We do live in an uncertain world.
Life is full of change and chance.
Indeed it appears that probability, lack of certainty, is deliberately built into creation, and that God must have made it that way for good reason. If we had time to speculate we might try to compare such a world, with its potential for human freedom and initiative, with the more limited conception of a fully determined clockwork universe. Another day for that, perhaps, but it would take us too far from what Jesus was actually talking about on this occasion. Much as we may love and delight in all that God has given us here, our true home is elsewhere. But Jesus had a more immediate concern when he challenged conventional wisdom about human guilt and the judgment of God.