He may be said to boast of a false gift, 1. Who pretends to have received or given that which he never had, which he never gave, makes a noise of his great accomplishments and his good services, but it is all false; he is not what he pretends to be. Or, 2. Who promises what he will give and what he will do, but performs nothing, who raises people's expectations of the mighty things he will do for his country, for his friends, what noble legacies he will leave, but either he has not wherewithal to do what he says or he never designs it. Such a one is like the morning-cloud, that passes away, and disappoints those who looked for rain from it to water the parched ground (Jde 1:12), clouds without water.

Whoso boasteth himself of a false gift,.... Of his charity and alms deeds; bragging of great things he does this way, when he does nothing; or who is very vain in making large promises of what he will give, when he does not perform; either not having it in his heart, or in the power of his hands, to give what he promises; Satan like, who offered to give all the kingdoms of this world to Christ, if he would worship him, when nothing of it belonged unto him, or was in his power to give: and so the Vulgate Latin version renders it, "a glorious man"; that is, a vainglorious man, and "not fulfilling promises". It may very well be applied to false teachers, who boast of their gifts and spiritual knowledge, when they have none; speaking great swelling words of vanity, when they are empty of all that is good, and are as follow:

is like like clouds and wind without rain; which make a show and appearance of rain, promise much, but produce none; see Pe2 2:17, Jde 1:12.

clouds--literally, "vapors" (Jer 10:13), clouds only in appearance.

a false gift--promised, but not given.