Q. Ga 6:2 Carry each other’s burdens, and in this way you will fulfill the law of Christ. What is the law of Christ? I thought we live under grace, not law.
A. We are indeed not under law but under grace:
• Rom 6:15 What then? Shall we sin because we are not under law but under grace? May it never be!), but that does not mean the law is abolished:
• Mt 5:17 “Do not think that I came to abolish the Law or the Prophets; I did not come to abolish but to fulfill.
The term the “law of Christ” occurs twice in the Bible:
• 1 Co 9:21 to those who are without law, as without law, though not being without the law of God but under the law of Christ, so that I might win those who are without law.
• Ga 6:2 Bear one another’s burdens, and thereby fulfill the law of Christ.
However, neither of these passages specify exactly what the law of Christ is.
Some have looked at the commands of Christ in the gospels and considered them as the laws of Christ e.g.
• Institute of Basic Life Principles http://iblp.org/questions/what-are-commands-christ
• Into the Word http://www.discipleshiptools.org/apps/articles/?articleid=36885&columnid=4189
While interesting, these are the determinations of human authors, not Scripture.
Others looked at what Jesus considered as the heart of God’s commandments & called that the law of Christ:
• Mt 22:37-40 And He said to him, “‘YOU SHALL LOVE THE LORD YOUR GOD WITH ALL YOUR HEART, AND WITH ALL YOUR SOUL, AND WITH ALL YOUR MIND.’ This is the great and foremost commandment. The second is like it, ‘YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF.’ On these two commandments depend the whole Law and the Prophets.”
• Mk 12:29-31 Jesus answered, “The foremost is, ‘HEAR, O ISRAEL! THE LORD OUR GOD IS ONE LORD; AND YOU SHALL LOVE THE LORD YOUR GOD WITH ALL YOUR HEART, AND WITH ALL YOUR SOUL, AND WITH ALL YOUR MIND, AND WITH ALL YOUR STRENGTH.’ The second is this, ‘YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF.’ There is no other commandment greater than these.”
• bearing one another’s burden i.e. loving your neighbor, fulfill the law of Christ, &
• the whole Law & the Prophets depend on these 2 commandments,
I believe Paul meant these two rather than a list of 49 or 50 of His commands as the law of Christ. But that’s my opinion, not Scripture.