Evolution teaches man came via death, mutation and billions of years. Scripture says we were created, as were all living creatures, and before sin there was no death. Because of sin and death, there must be atonement, or reconciliation to a Holy God. Jesus Christ provides that atonement. Therefore if sin came after death, then the curse is false, then the need for atonement is false, therefore Christ died in vain. Pretty easy to see why the lie of evolution is so important to Satan. Incidentally, let me go on record here for all time (or as long as there’s Google) that should evolution be proven - then the Bible is false and untrustworthy. But I’m not worried about that.