This is what St. Peter is saying in his second epistle, which was our first reading today, where he speaks of his personal experience when he witnessed Christ's Transfiguration on Mount Tabor. As he writes St. Peter is preparing for his imminent death by crucifixion, when he will put off his tent (you remember he wanted to set up tents on the Mountain). As he prepares for his death, he recalls this event in order to remind the Faithful what they are destined for, what God has promised them- if, and there is an if. If they do certain things.

True religion is to offer the sacrifice of worship, to fast, pray, give tithes, care for the needy, abstain for sexual impurity, to conform to the family rules in mutual submission and to do it all with the right interior disposition, with true faith, humility, and love.

If you do all the stuff without the right interior disposition, you have false religion. If you try to have the right interior disposition without obedience, you have no religion, and end up with the subjective god of self.

This Orthodox Christian life is not simply about getting all the t's crossed and i's dotted- as important as that is- getting the Faith right is important so that we can authentically know God in the Spirit, and that knowledge, which is intimate and personal results in us becoming faithful and holy.