Pillar 4 is show time! Your entire preparation including understanding the objective, analyzing the audience, and preparing material is to materialize the delivery of your presentation, which perhaps requires the shortest period compared to other pillars. But, this is the activity that matters. It is this activity which will make or break the objectives you are about to achieve. Suppose you have done a great job in pillars 1, 2, and 3; you will have the greatest chance of succeeding in pillar 4. If you have faltered in one of the earlier pillars, you will have to depend on prayers rather than your ability to pass through the cracks. In short, all four pillars are important, although presentation delivery representing pillar 4 seems like the junction of salvation.