"I stopped being watchful and diligent. I rushed after my own lusts. I sinned against the light of the Word and the goodness of God. I have grieved t… - John Bunyan

Christian meets two more ill-fated pilgrims as he continues his expedition down the King's Highway. His ability to discern a false pilgrim has been advanced since his experience with Simple, Sloth, and Presumption.
Christian immediately focuses on three things that seem out of place. First, the tumbling over the wall called Salvation without coming through Christ, the narrow gate, or experiencing any illumination by the Holy Spirit immediately warns Christian that these are trespassers. Second, their testimony of having come from the land of Vain-Glory warns Christian that they are neither humble nor burdened by sin. Third, their wish to arrive at Mt. Zion to receive praise rather than to give praise to the only one worthy of praise alarms Christian. Christian quickly discerns that the motives of Formalist and Hypocrisy are unworthy and contemptuous.
Formalist

Evangelist spoke from his heart with great passion. “You cannot be justified by the works of the law, because it isn’t how one follows the law or the good things they do that rids one of their burden.

If we have not quiet in our minds, outward comfort will do no more for us than a golden slipper on a gouty foot.