Not a whit
Not the least bit. Source: A King James Dictionary. (Used with permission. Copyright © Philip P. Kapusta)
For I suppose I was NOT A WHIT behind the very chiefest apostles. ( 2 Corinthians 1:1 Revelation 11:5 )
Bibliography Information"Entry for 'Not a whit'". Dictionary of Words from the King James Bible. . New York, N.Y., 1999.