But now ye rejoice in your boastings: all such rejoicing is evil.

People's New Testament

4:16 Ye rejoice in your boastings. It was a boastful manner to use such a language as that of Jas 4:13 in stating plans.

Jamieson-Fausset-Brown Bible Commentary

16. now-as it is.

rejoice in . boastings-"ye boast in arrogant presumptions," namely, vain confident fancies that the future is certain to you (Jas 4:13).

rejoicing-boasting [Bengel].

Matthew Henry's Concise Commentary

4:11-17 Our lips must be governed by the law of kindness, as well as truth and justice. Christians are brethren. And to break God's commands, is to speak evil of them, and to judge them, as if they laid too great a restraint upon us. We have the law of God, which is a rule to all; let us not presume to set up our own notions and opinions as a rule to those about us, and let us be careful that we be not condemned of the Lord. Go to now, is a call to any one to consider his conduct as being wrong. How apt worldly and contriving men are to leave God out of their plans! How vain it is to look for any thing good without God's blessing and guidance! The frailty, shortness, and uncertainty of life, ought to check the vanity and presumptuous confidence of all projects for futurity. We can fix the hour and minute of the sun's rising and setting to-morrow, but we cannot fix the certain time of a vapour being scattered. So short, unreal, and fading is human life, and all the prosperity or enjoyment that attends it; though bliss or woe for ever must be according to our conduct during this fleeting moment. We are always to depend on the will of God. Our times are not in our own hands, but at the disposal of God. Our heads may be filled with cares and contrivances for ourselves, or our families, or our friends; but Providence often throws our plans into confusion. All we design, and all we do, should be with submissive dependence on God. It is foolish, and it is hurtful, to boast of worldly things and aspiring projects; it will bring great disappointment, and will prove destruction in the end. Omissions are sins which will be brought into judgment, as well as commissions. He that does not the good he knows should be done, as well as he who does the evil he knows should not be done, will be condemned. Oh that we were as careful not to omit prayer, and not to neglect to meditate and examine our consciences, as we are not to commit gross outward vices against light!