Each one who teaches believers must examine what he is teaching them because God will reward him only if his teaching is valuable and long-lasting.

1 Corinthians 3:9b-15

Also, a house belongs to its owner. It does not belong to the man who built it. Similarly, God is the one to whom you belong. 10 Just like a skilled person puts a foundation in the ground before he builds a house, as a result of God kindly helping me [MET], I was the first one who declared the message about Christ to you. And, just like others build a house on its foundation, there were others who later taught you more about Christ. But just like each person who builds a house must be careful about what materials he uses to build it [MET], each person who teaches God’s truth must be careful about what he teaches. 11 Just like people can put in only one foundation for a house [MET], there is only one message that we can give to people. That message is about Jesus Christ. 12 Furthermore, people can build a house on its foundation with materials that are valuable and do not burn easily, such as gold, silver, and expensive jewels. Or they could build a house with materials that are not valuable and that burn easily, such as wood, hay, and straw. 13 Later it will become clear/evident what kind of material they used to build the house. Similarly, when people teach others God’s truth, it will later become clear what kind of things they taught. God will make that clear/evident at the time when he judges us [MTY]. 14 When a fire starts burning a house, it becomes clear whether the builders used materials in their work that will burn, or materials that will not burn. Similarly [MET], when God judges us, it will be clear whether we taught others things that were long-lasting and valuable or not. If the materials that are used to build a house are materials that do not burn, the builder will receive a reward [MET]. Similarly, if we have taught others things that are valuable and long-lasting, God will give us a reward. 15 If the things that we have taught are not valuable and long-lasting [MET], we will not get a reward. We will be saved {God will save us} from hell, but that is all that we will get. We will be like a man who escapes from a fire without saving any of his possessions.