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matchexpression1
matchexpression2
matchexpression3

random text matchexpression1 random text
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random text matchexpression2 random text
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random text matchexpression3 random text
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#!/bin/sh


NUMBER=$(wc $2 | awk '{ print $1}') #Save number of lines of the pattern file

cp $1 /tmp/modified1.$$          # Make a tmp file for the one that will be modified.

for (( i=1; i<=$NUMBER;i++)) do   # Loop for all lines of the pattern file             
PATTERN=$(sed -n "$i p" $2)       # get the pattern 

sed -e "/$PATTERN/ {                        # Mathes the pattern?
N                                           # Append first
N                                           # Append second
d                                           # Delete all
}" /tmp/modified1.$$  >> /tmp/modified2.$$  # Save in a second tmp file

mv -f /tmp/modified2.$$ /tmp/modified1.$$   # Update the first tmp file

done

mv -f /tmp/modified1.$$ file3

script_file file2 file1

old_IFS=$IFS
IFS="
"
for a in $(cat -n file); do
    for i in $(cat match); do
        echo $a | grep $i | awk {'print $1'}
    done
done
IFS=$old_IFS

sed '/expression1\|expression2/,+Xd'