And may the Lord make you increase and abound in love to one another and to all, just as we do to you,
1 Thessalonians 3:12 (NKJV)
As we mature and grow in our walk with the Lord, so does our loving. Our ability to love people—including those who might be difficult to love—is not based upon our own strength or effort, but it is in direct proportion to our receiving the love of Christ for ourselves. The more that we receive His love, the greater our revelation of His love, the more will we be able to be channels and instruments of His love for others.