"My command is this: Love each other as I have loved you." - John 15:12, NIV
In the Old Testament, the meal offering consisted of fine flour that was ground to powder by being placed in a round hole, where it was grated by a square pestle. The flour was then mixed with oil, which represented the Holy Spirit. The oil and flour, thoroughly mixed together and offered to God, was a picture of a totally consecrated life.
Sometimes God puts us with someone whom He uses to grate us. For instance, perhaps you are very generous with your money, and you are married to someone who is so careful, he or she is almost stingy. Or perhaps you are very quiet, and God has put you on a committee with someone who talks nonstop. Or worse, perhaps you are a nonstop talker and you are on a committee with another nonstop talker! Instead of avoiding those with whom we are incompatible or just tolerating them, Jesus commands you and me to love them. And as we obey His command, He will use that person to grind off our sharp, impatient, un-Christlike edges.