How do I store the grepped result to variable if the result has multiple lines

I have a command in my script that goes like this MESSAGE=`grep -Po 'MSG.K[ws,.''',.:]*' < $LINE` Now when this command is run I have an output which look like this Kohl's EDI will be down for scheduled maintenance starting at 12:30 am until approximately 4:00 am central time on Wednesday June 22nd. Kohl's will not be able to send or receive EDI or AS2 transmissions during this time. If your company's AS2 software has an automated process to resend a file after a failure, Kohl's encourages your company to enable the resend process. This is also a reminder for AS2 trading partners that Kohl's AS2 certificate will be changing at 11:00 am central time on Tuesday June 21st. Now after grepping the whole thing out I would pass the result of the command to a variable that will be used so that I can store the result to a mysql database The question is How will I do it?