Speak not, either good or bad — That is, say nothing against his going on with his journey, for the thing proceedeth from the Lord. The same Hebraism we have, Genesis 24:50. The safety of good men is very much owing to the hold God has of the consciences of bad men, and the access he has to them.
Related Commentaries of Genesis 31:24
Genesis 31:24
24 And God came to Laban the Syrian in a dream by night, and said unto him, Take heed that thou speak not to Jacob either good or bad.