Ephesians 4:29
29Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers.
The Westminster Larger Catechism summarizes the doctrine of Scripture to say some sins are "aggravated" (worse) because, among other things, they affect more people, are done under pretense of authority, in greater presence of grace, etc.
All these are violated, and make it aggravated when a church leader uses cursing, swearing language as part of an authoritative act such as preaching. It ought to be subject of church discipline, as appropriate for aggravated sin.
Recently, the long-time Pastor of our President was shown on video and audio repeatedly taking our Lord's Name in vain- from the pulpit. Brazenly, repeatedly cursed God
from the pulpit.
Exodus 20:7 (King James Version)
7Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain.
My first reaction was, where is the church discipline on this?
Why did the members of his congregation not demand it, let alone its leaders?
Why was there no official denunciation from his church, made public?
Why didn't other churches in that denomination demand it?
Imagine the irony- the FCC broadcast guidelines held a higher standard than apparently the Pastor, the leaders of his church, the members, and those related to it with influence.
A brazen act of cursing the Lord, from the pulpit, repeatedly by one who would presume our Lord's authority to teach and disciple His people, disseminated publicly to believer and nonbeliever alike, and without concern or remedy, apparently.