In 1 Timothy 4:2, the consciences of the liars are seared as with what?

Answer: A hot iron

Some will abandon the faith, influenced by the hypocrisy of liars whose consciences are seared with a hot iron.

“Now the Spirit expressly states that in later times some will abandon the faith to follow deceitful spirits and the teachings of demons, influenced by the hypocrisy of liars, whose consciences are seared with a hot iron.”— 1 Timothy 4:1-2 (BSB)