Geneva Bible Notes Reformed @genevanotes

Boast not thyself of to morrow; for thou knowest not what a day may bring forth. (a) Do not delay the time, but take the opportunity when it is offered.

Keil & Delitzsch Lutheran @keilanddelitzsch

Pro 27:1 In the group Pro 27:1-6 of this chapter every two proverbs form a pair. The first pair is directed against unseemly boasting: 1 Boast not thyself of to-morrow, For thou knowest not what a day bringeth forth. The ב of בּיום is like, e.g., that in Pro 25:14, the ב of the ground of boasting.