What does "hold fast to good" mean?
What does it mean to "hold fast to what is good"?

Setting the Scene

1 Thessalonians 5 walks us through a rapid-fire list of closing commands—rejoice, pray, give thanks, do not quench the Spirit, and then: “but test all things. Hold fast to what is good” (1 Thessalonians 5:21).

• “Hold fast” is paired with “test all things,” showing the order: discern first, then grip what passes the test.


Word Study: “Hold Fast”

• Greek: katechō—“to seize, keep firm control, restrain from slipping away.”

• Picture a sailor clinging to the rigging in a storm; the grip is intentional, forceful, ongoing.

• Scripture uses the same verb for holding the traditions (2 Thessalonians 2:15) and the word of the gospel (1 Colossians 15:2).


Why Must We Test First?

1 John 4:1—“Beloved, do not believe every spirit, but test the spirits to see whether they are from God.”

Acts 17:11—the Bereans are commended because they “examined the Scriptures daily.”

• Without testing, we may clasp counterfeit “good” and loosen our grip on the genuine.


What Qualifies as Good?

• God alone defines goodness. Psalm 119:68—“You are good, and You do what is good.”

Romans 12:9—“Detest what is evil; cling to what is good.” The good is whatever aligns with God’s character and commands.

Philippians 4:8 catalogues it: true, honorable, just, pure, lovely, commendable, excellent, praiseworthy.


Practical Ways to Hold Fast

1. Fasten to Scripture

– Memorize key passages (Psalm 119:11).

– Meditate day and night (Joshua 1:8).

2. Fasten to Sound Teaching

– Sit under expositional preaching (2 Timothy 4:2-3).

– Compare every new idea with the whole counsel of God.

3. Fasten to God’s People

– “Encourage one another daily” (Hebrews 3:13).

– Small-group accountability keeps fingers tight on the rope.

4. Fasten in Prayer

– Ask the Spirit to “guide you into all truth” (John 16:13).

– Pray Psalm 119:31, “I cling to Your testimonies.”

5. Fasten by Obedience

– Doing the Word reinforces believing it (James 1:22-25).

– Each act of obedience drives another nail into the grip.


Living Illustrations of Holding Fast

• Joseph resisted Potiphar’s wife, valuing God’s standard of purity above a career shortcut (Genesis 39).

• Daniel kept praying when the decree forbade it, preferring lion’s-den danger over loosening his hold on godliness (Daniel 6).

• The Thessalonians themselves “turned to God from idols to serve the living and true God” (1 Thessalonians 1:9): a community-wide grip on the good.


Cautions: What Weakens the Grip?

• Drift—neglect of Scripture and fellowship (Hebrews 2:1).

• Compromise—small concessions that erode conviction (1 Colossians 15:33).

• Doubt—allowing feelings to outrank God’s Word (James 1:6-8).

• Distraction—good activities that crowd out the best (Luke 10:40-42).


Encouraging Promise

• We are not clinging alone: “Let us hold resolutely to the hope we confess, for He who promised is faithful” (Hebrews 10:23).

• The God who calls us to grip the good supplies the strength to keep holding on (Philippians 2:13).

How can we 'test all things' in our daily Christian walk?
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