Paul reminded the believers in Galatia to do good to one another. They needed to be humble and gentle. This was especially true when they corrected one another.
They needed to give freely to teachers who taught them the truth about Jesus. And they needed to help other believers with things that were hard for them. Paul described this as carrying one another’s heavy loads. It’s what Jesus taught people to do in Christ’s law.
At the same time, each Galatian believer was to carry their own load. This means that each believer is responsible to God for the choices they make. They can choose to act according to desires that are sinful. Or they can choose to act in ways that please the Holy Spirit.
Paul described these choices like seeds that people plant. What happens as a result of their actions is the crop that is harvested. When people follow Jesus’ example, the harvest is eternal life in God’s kingdom. But the harvest of sinful actions leads to death.