# thinks he is religious

"thinks he worships God correctly"

# his tongue

Controlling one's tongue stands for controlling one's speech. Alternate translation: "what he says" (See: [[rc://en/ta/man/jit/figs-metonymy]])

# deceives

gets someone to believe something that is not true

# his heart

Here "heart" refers to his belief or thoughts. Alternate translation: "himself" (See: [[rc://en/ta/man/jit/figs-metonymy]])

# his religion is worthless

"he worships God uselessly"