Treasury of Scripture Knowledge
Summary
But Amnon had a friend, whose name was Jonadab, the son of Shimeah David's brother: and Jonadab was a very subtil man.
Subtil man
Bible References
Subtil man
1 Corinthians 3:19
For this world's "wisdom" is foolishness to God. For it is written [Job 5:13], "He [i.e., God] catches wise people in their cleverness."
James 3:15
This "wisdom" is not the kind that comes from [God] above, but is earthly, unspiritual and demonic [i.e., it is motivated by an evil spirit and not the Holy Spirit].