Keith David says the sad fact is places of worship have to increase security ... even if it means checking everyone at the door.
We got the "Greenleaf" star -- he plays Bishop Greenleef -- at LAX where he said checking worshipers just seems necessary now in the wake the mass shooting in Sutherland Springs ... at least until Congress passes some serious gun control legislation.
The way Keith sees it ... until mentally ill people are forbidden from owning guns, preachers and congregations need to help God help them.