Is it right for the Christian to defend the US Constitution?

Yes. Defend the constitution, with an equal and greater zeal for the Kingdom’s greater context. As Christ-followers we are primarily responsible to live with fidelity to the Lord, which entails living with servant hearts to our neighbors. This is the first and second commandments. 

Secondly, we live in subjection to all civil constitutions (US, Russian, English, etc.) bearing our cross (not our M16) in cultural penetration, all for the sake of the gospel. 

Thirdly, we have zero NT authorization/permission to incite armed zealotry for any civil government. Less than zero on account of sketchy conspiracies. Remember Paul’s exhortation to the Church in Thessalonica:
“We exhort you, brethren, warn those who are unruly, comfort the fainthearted, uphold the weak, be patient with all. See that no one renders evil for evil to anyone, but always pursue what is good both for yourselves and for all. Rejoice always, pray without ceasing, in everything give thanks; for this is the will of God in Christ Jesus for you. Do not quench the Spirit. Do not despise prophecies. Test all things; hold fast what is good. Abstain from every form of evil.” (1 Thessalonians 5:14-22)

Rather, we have a strong mandate to repudiate false reports, false prophecy, crossless zeal, and idolatry (Jude 20-23 comes to mind) wherever we find it in the body of Christ, for the sake of “living at peace with all men”, (Romans 12:18) and the safeguarding the integrity of our Biblical worldview and our incarnational witness.

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JSB • December, 2020