MEM O how love I
'ahab (aw-hab')
to have affection for (sexually or otherwise) -- (be-)love(-d, -ly, -r), like, friend.
thy law
towrah (to-raw')
a precept or statute, especially the Decalogue or Pentateuch -- law.
it is my meditation
siychah (see-khaw')
reflection; be extension, devotion -- meditation, prayer.
all the day
yowm (yome)
a day (as the warm hours),