Question: "Should Christians try to force the kingdom on others?"
Answer: God has never called Christians to establish a physical kingdom ruled by His laws, commands, and statutes. The mission of Christians is to share the Gospel of salvation with the whole world (Matthew 28:18-20; Acts 1:8). When people are saved, the Holy Spirit will begin the work in them of changing their lives into conformity with Godís Word (Philippians 1:6; 1 Thessalonians 2:13). That is why Christ put an end to the Old Testament law (Romans 10:4; Galatians 3:24-26; Ephesians 2:15) and instead instituted the law of Christ (Matthew 22:37-40; Galatians 6:2).
God is more interested in saving peopleís souls than He is in forcing people to obey His laws. For an unsaved person to obey Godís law, he would be doing it out of fear and obligation. God wants a person to come to repentance (2 Peter 3:19) and then to obey His commands out of reverence and love (1 John 5:3). So, the answer to your question is no. God has not called us to enforce His commands on an unredeemed world. Rather, he has called us to proclaim the message of salvation Ė the redeeming power and life-transforming message of Jesusí death on the cross (Romans 5:8).