Devotional on the Westminster Larger Catechism, Q&A 39

Devotional on the Westminster Larger Catechism, Q&A 39

Devotional on Westminster Larger Catechism Q&A 39

Q&A 39: What is the duty which God requireth of man?

A: “The duty which God requireth of man, is obedience to His revealed will.”


The simplicity of this answer belies its profound and comprehensive scope. Obedience to God’s revealed will is the essence of the duty assigned to all humanity. This command sweeps across every aspect of life, touching upon our thoughts, words, and deeds. It frames our relationships with God and with one another and is foundational to living a life that glorifies and enjoys God.

The Revealed Will of God

God’s will is revealed primarily through Scripture. The Bible is not just a historical document or a collection of moral teachings; it is the living and active word of God (Hebrews 4:12). Through it, God discloses His character, His purposes, and His commands. The Psalmist writes, “Your word is a lamp to my feet and a light to my path” (Psalm 119:105). It guides us in every situation, offering wisdom and clarity for living rightly before God.

The Scope of Obedience

Obedience to God’s will encompasses both what we must do and what we must avoid. It involves adhering to the Ten Commandments, embracing the beatitudes, loving God with all our heart, soul, strength, and mind, and loving our neighbors as ourselves (Luke 10:27). This obedience is not merely external but springs from a heart transformed by the grace of God through faith in Jesus Christ.

The Grace of Obedience

Obedience is also a grace. It is both our duty and our delight because it is not something we do in our own strength but with the help and empowering of the Holy Spirit. Philippians 2:13 tells us, “For it is God who works in you, both to will and to work for his good pleasure.” God’s grace enables our obedience, making it possible for us to live in a way that pleases Him.


Commit to the Word: Regularly read, study, and meditate on Scripture. Let God’s Word shape your understanding, your priorities, and your decisions.

Seek Empowerment: Pray for the Holy Spirit’s help to understand and follow God’s will. Acknowledge your dependence on divine aid to live a life of obedience.

Reflect Christ in Action: In your interactions with others, ask yourself if your actions reflect the love and obedience Christ showed. Seek to embody the fruits of the Spirit in all your dealings.


The call to obedience is foundational to the Christian life. It is a joyful obligation, one that we carry out under the gracious enablement of God. As we obey His revealed will, we find our deepest satisfaction and our highest purpose. Let us, therefore, pursue a life of obedience, not as a burden but as our proper response to the love and grace we have received in Christ. Amen.