Tithing is not an obligation, it is not a commandment, not even a responsibility before the Lord; whoever learns to define tithing in these terms sooner or later ends up seeing the tithe as a heavy burden from which he will seek to escape.
Reuben was the result of God's decision about Leah, God determined Reuben's birth because of Jacob's contempt for her, so Reuben's name is a prophetic name,
So, God wants to Reveal to us His mysteries, and because He has so disposed. Man's initiatives, his religious rites, his executions scrutinizing other books, etc., only hinder the process and alienate the person from the divine initiative.
So, there is a process of preparation for exposure to Revelation, but it is not man-made, on the contrary, it is a process developed by God to unveil how worthy a person is to contain His mysteries. Man can do nothing to ensure that God will entrust His Revelation to him. In this whole process we can prove the presence of the mystery of God's love.