Prov 26:2

“For as a bird flying to lofty places, etc. Words are rightly compared to birds because they fly through the air sounding, from the mouth of the speaker to the ears of the listener; but they differ in this, that it can happen that a bird flying anywhere settles where no necessity or use is served to it. However, the words we speak do not disappear and vanish dispersed anywhere into the wind, but all return to their author, and either benefit the speaker if spoken well or burden them if spoken poorly, so that we are forced to account for every idle word on the day of judgment. How much more do curses oppress not only those maliciously aimed at the innocent but even those indiscriminately uttered by negligent customary practice against anyone. For indeed, the revilers will not inherit the kingdom of God (I Cor. VI). Not without reason does he say, a curse uttered in vain, for there is also a curse not uttered in vain, but released in just wrath of divine strictness against the impious; as that of blessed Peter against Simon Magus, Your money perish with you (Acts VIII); and those pronounced against apostates and heretics by ecclesiastical censure, anathema [anathemas]; about which the Lord says to the same Church, Whatever you bind on earth shall be bound in heaven (Matt. XVI, and XVIII).”

“"As birds and sparrows fly away, so the curse causeless shall not come upon any one." And again [Solomon] says, "Those that bring reproaches are exceedingly foolish." But as the bee, a creature as to its strength feeble, if it stings anyone, loses its sting and becomes a drone; in the same manner you also, whatsoever injustice you do to others, will bring it upon yourselves. .”