lest
Webster 1828
LEST, conjunction That not; for fear that.Ye shall not eat of it, neither shall ye touch it, lest ye die. Genesis 3:3.The phrase may be thus explained. Ye shall not touch it; that separated or dismissed, ye die. That here refers to the preceding command or sentence; that being removed or not observed, the fact being not so, ye will die.Sin no more, lest a worse thing come to thee. John 5:14.Sin no more; that fact not taking place, a worse thing will happen to thee