John Gill
Open rebuke [is] better than secret love. This is to be understood, not of rebuke publicly given; though Aben Ezra thinks public reproof is meant, which, arising from love, is better than that which is done in secret, though in love, as being more effectual; for rebuke among friends should be given privately, according to our Lord's direction, Matthew 18:15; but it signifies reproof given...
Matthew Henry
1 Boast not thyself of to morrow; for thou knowest not what a day may bring forth. Here is, 1. A good caution against presuming upon time to come: Boast not thyself, no, not of to-morrow, much less of many days or years to come. This does not forbid preparing for to-morrow, but presuming upon to-morrow. We must not promise ourselves the continuance of our lives and comforts till to-morrow, but...
Charles H. Spurgeon
Open rebuke is better than secret love. That I should love my fellow-man is a good thing; but to have love enough to be able openly to rebuke his faults, is a very high proof of affection, and far better than secret love that is silent when it ought to speak. And yet, how many persons there are who are very angry with you if you give them an open rebuke, and how many there are who are foolish...