戒 admonish / commandment

I admonish you not to play with that KITE anymore, or my spear will send you straight to hell.

the ten commandments. ☆☆☆☆☆ FP
十 (ten) + 戒 (admonish / commandment) = 十戒 (the ten commandments.)

to be vigilant ☆☆☆☆☆
警 (the fuzz) + 戒 (admonish / commandment) = 警戒 (to be vigilant)

to be vigilant, to take precautions. To be on high alert - police or security. Describes a tense but temporary situation.