All you have to do is be born from above. And they were probably speaking in low tones, maybe even whispering. If you want to get to heaven, you have to be born from above, from the Spirit. Jesus says to Nicodemus that life in the kingdom is a gift given by God, from above, unearned and unachieved. No set of rules, no formula, is going to get you there.
Flesh is flesh, but spirit is spirit.
I remember growing up in the South, in cotton country, in the summer, before air conditioning became something almost every home had. Several of those summers I spent working on my uncle's cotton farm, down in the Mississippi delta, just outside of my birthplace, Cleveland, Mississippi. It was hot work, hard work, bringing in a cotton crop. It still is, but technology has made it a lot easier than it was back then. When the crop had been tended for another day, the weeds chopped from between the cotton plants, in the evening everyone would gather on the front porch.