The word "in vain" is used, as a rule, in the Christian sense. When talking to the elderly or Orthodox, you can often hear them remark: do not remember the Lord in vain.
What is "in vain", few people know. The word just came into use as a negative.
Meaning of the word and origin
Turning to numerous dictionaries of the Russian language, we will see the following meanings of the parsed word "in vain": just like that, in vain, in vain, in vain, useless. From this we draw conclusions about what "in vain" means. This is an obsolete synonym for the words above, meaning something empty and vain.
It came from two syllables "v" and "sue", it becomes clear that we are talking about the old Slavic alphabet. According to the Old Russian language, the word "sui" means "empty" or "vain".
The name of the Lord is in vain
The Savior gave his disciples a commandment not to mention His name in vain. And not only to the first disciples - the apostles, but to every person,who is an Orthodox Christian.
There is nothing worse than when the name of the Lord is mentioned just like that, for the purpose of manipulation or when a conflict arises. For example, a beggar asks for alms at the church porch and in a sad voice calls out to those passing by: "Give me for Christ's sake!"
That is, he puts pressure on people's conscience, manipulating the name of Christ. Like, naive little people will not be able to pass by, because they are asked for the sake of Christ, and the one who asks must be given.
Or during a conflict there is a transition to personalities with mutual insults. And one of the opponents, trying to hurt the other, pronounces the name of the Lord absolutely thoughtlessly, for the sake of causticity.
Calling on the name of Christ just like that brings punishment. God punishes those who use His name in vain.
Conclusion
At first glance, the words seem harmless. But if you dig deeper, it turns out that we often use them simply out of inertia. Let's think before we pronounce this or that word in vain, and even more so the name of the Lord!