As a Christian, God has called you to share the good news about His Son and help His children with their burdens, "and so fulfill the law of Christ." A few verses later, Paul also wrote: "So then, as we have opportunity, let us do good to everyone, and especially to those who are of the household of faith (Gal. 6:2, 10).
No matter who you are as a Christian, The Cause of Christ offers you an excellent opportunity to "do good . . . especially to those who are of the household of faith."
Jesus said that everyone will be rewarded who gives "a cup of water" to those who "belong to Christ" (Mark 9:41). Even so, you have an opportunity to share the gospel, supply "the needs of the saints," "produce thanksgiving to God," and "increase the harvest of your righteousness" (2 Cor. 9:10-12).