Marvel not that I said unto thee, Ye must be born again. There is only one way to become a little child and enter the Kingdom. You must be born again. And only God can do that with your life. This is more than simply joining a church congregation.
Man can do that.
But experiencing new birth is something only God can cause to happen to us. Rich man, Moses ways were not enough. They were all God could use to work with people whose hearts were hard. Man could not have God do the works required due to man s hard heart. The heart believes, and a hard heart cannot experience such faith for God to work.