Why does Hughes expect to be saved at the revival meeting?

Hughes expects to be saved at the revival meeting because of what others say and do before the meeting, and what happens at the meeting itself.

Before Hughes goes to the meeting, the revival has been going on for days, and those who have attended are very excited, building general anticipation. Langston's Auntie Reed has been talking about the meeting. She specifically tells him what will happen at the meeting--that he'll see a light, and...

Hughes expects to be saved at the revival meeting because of what others say and do before the meeting, and what happens at the meeting itself.

Before Hughes goes to the meeting, the revival has been going on for days, and those who have attended are very excited, building general anticipation. Langston's Auntie Reed has been talking about the meeting. She specifically tells him what will happen at the meeting--that he'll see a light, and feel the presence of God. She is so specific, and so confident, that Hughes believes this is a certainty (not just something that might happen). Other people have told similar stories.

Once Hughes is at the meeting, the expectation and pressure to be saved build. All the other children go up to the altar, and some of the girls cry due to the intense emotions they feel. Since the other children are apparently being saved, it is reasonable for Hughes to expect to be saved too.