"By this all men will know that you are My disciples, "if" you have love for one another."
Only by knowing God can we have that kind of love. Only by learning to love God that we learn how to truly have love for others.
As our relationship with Jesus grows, we become more like Him, and we are given the ability to reciprocate that love to others.
The world doesn't know what real love is, and how will they ever know if we as the Body of Christ don't show God's love to each other?
The true test of being a disciple of Christ is not from knowing the Scriptures, but it's from living the Scriptures which includes displaying our genuine and unconditional love for each other as believers and ambassadors for Christ.
"Love God and Love People" by Danny Gokey