Foolish translates the same Greek noun used in 5.22.
Wise translates the same Greek word used in 24.45; it was first used in 7.24.
Quoted with permission from Newman, Barclay M. and Stine, Philip C. A Handbook on the Gospel of Matthew. (UBS Handbook Series). New York: UBS, 1988. For this and other handbooks for translators see here .