In ancient Israel, people killed animals as sacrifices to God. When the priest offered these animals to God, the animals were already dead. When Paul wrote about a living sacrifice people were probably confused. However, he wanted Christians to know when they lived in a way that honored God, this was a type of sacrifice or offering to God.
Paul wrote about a reasonable service. Some scholars think Paul wanted people to know that it was right for them to serve God. This is because God was gracious and merciful to people. Other scholars think Paul wanted people to serve God completely.
God wanted Christians to think in a different way than they thought about before they were Christians. God changed Christians so that they could think in a new way.
Paul wrote about people thinking highly of themselves. People often think they are greater than they are and deserve to be honored more than they should be honored. This was wrong. It is pride.
Paul wrote about the measure (see: Romans 12:3) and proportion of faith (see: Romans 12:6). Some scholars think Paul was writing about the amount of faith that God gave to a person. Other scholars think that Paul was writing about the spiritual gift of faith that God gave to certain people.
Paul wrote about a person’s body. A body has many different parts or “members”(μέλος/g3196). Each body part did something specific. Paul used this as a metaphor. He wanted every Chrsitian to know that they each served God in a specific way.
Someone hesitated when they thought too much about what they were going to do and did not do anything because of it. Perhaps they did this because they did not want to do anything or did not want to do something at a certain time. That is, they were lazy.
See: Proverbs 13:4; Matthew 25:5-6; Hebrews 6:11-12; 10:38; Revelation 3:15-16
Paul wrote, “concerning the spirit, be eager.” Some scholars think Paul wanted Christians to be eager or excited to do something. Other scholars think Paul wanted people to know that the Holy Spirit can help them be eager or excited to do something.
Paul wrote about how Christians should live. He did not want them to repay evil for evil (see: Romans 12:17). He also did not want Christians to avenge themselves (see: Romans 12:19). He did not want Christians to do evil things to people because they did evil things to them.
See: Exodus 23:4-5; 1 Samuel 25:26, 31, 33-34; Proverbs 20:22; Matthew 5:39; 1 Thessalonians 5:25; 1 Peter 3:9
In the last days, God will punish people with his wrath. He will punish people for doing evil things. Paul did not want Christians to try to punish people. He knew God would punish people. This is something that God should do. People should not do this because they do not know everything.
Paul wrote the same thing Moses wrote (see: Deuteronomy 32:35). He wanted people to know that he taught the same things Moses taught. He wanted people to trust that God would punish people.
Paul wrote the same thing Solomon wrote (see: Proverbs 25:21). Solomon wanted the Israelites to help their enemies and not take revenge on them. Paul wrote that this will heap coal of fire on their heads. This is a metaphor. Some scholars think the person will be ashamed if a Christians is kind to them after they do something evil to the Christian. Other scholars think Paul was writing about God punishing them. If Christians do not try to punish this person, then God will punish them more (see: Psalm 140:10).
Paul wrote about someone not being overcome by evil. He did not want people to get so angry that they tried to punish people. Instead, he wanted them to good things even though people did evil things to them.