Vigilance, Precaution
noun, の adjective
My warning commandment is there to make sure you take precaution and show vigilance when it comes to that precaution. It's only a warning commandment, though, which is why it has to do with prevention and precaution.
けいかい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ちょっと警戒していることがあるんです。
There is something I’m a bit cautious of.