If you desire to be pure, have firm faith, and slowly go on with your devotional practices without wasting your energy in useless scriptural discussions and arguments. Your little brain will otherwise be muddled.
It's enough to have faith in one aspect of God. You have faith in God without form. That is very good. But never get into your head that your faith alone is true and every other is false. Know for certain that God without form is real and that God with form is also real. Then hold fast to whichever faith appeals to you.
When you meditate, go into the solitude of a forest, or a quiet corner, and enter into the chamber of your heart. And always keep your power of discrimination awake.
What Brahman is cannot be described. All things in the world — the Vedas, the Puranas, the Tantras, the six systems of philosophy — have been defiled, like food that has been touched by the tongue, for they have been read or uttered by the tongue. Only one thing has not been defiled in this way, and that is Brahman. No one has ever been able to say what Brahman is.
Dwell, O mind, within yourself; Enter no other's home. If you but seek there, you will find All you are searching for. God, the true Philosopher's Stone, Who answers every prayer, Lies hidden deep within your heart, The richest gem of all. How many pearls and precious stones Are scattered all about The outer court that lies before The chamber of your heart!