So, when I became older, I started to question a lot of the information that was taught in my high school religion courses. After a while, religion became an obsession, and I went through all sorts of phases, specially the atheist-phase. When I now read Langston Huges "Salvation" it reminds me of my experience as the atheist in a school full of believers. I can definitely relate to feeling like the "unsaved lamb" because a lot of people looked at me that way.
However, just because I was outspoken about my unbelief doesn't mean I still agree with my 14 year old self. If I were Langston, I would have received the Holy Ghost the minute the sermon was over. The expression "pick your battles" here applies. Debating or being obstinate really isn't worth it with something that is so personal.
There is also a gap which the author underlines, which is the one between the mentalities of the adults and of the children. They are so far apart that the Aunt could not tell the pressure that Langston was submitted to in the church, or nor understand Langston's crying as tears of guilt instead of joy. Although, the author could be trying to be ironic, implying that maybe Langston really did find Jesus because at the end he felt bad about lying.