Philippians 1:10 urges approving what is excellent—synonymous with testing to hold fast what is good.

Revelation 3:11 echoes 'hold fast what you have' to preserve one's crown, reinforcing perseverance.

Revelation 2:25 uses the same 'hold fast' command, urging perseverance until Christ returns.

Revelation 2:2 commends testing false apostles—an example of putting 'test everything' into practice.

1 John 4:1 explicitly commands testing spirits—identical concept to testing everything, especially teachings.

2 Thessalonians 2:15 commands to stand firm and hold to the traditions, echoing the call to hold fast after testing.

Proverbs 4:13 directly says 'keep hold of instruction; do not let go'—identical call to hold fast what is good.

Ephesians 5:10 calls us to discern what pleases the Lord—a concrete focus for the 'test everything' command.

1 Corinthians 2:15 says the spiritual person judges all things—directly parallel to testing everything. Both urge discernment by the Spirit.

1 Corinthians 2:14 explains that natural people cannot accept spiritual truths—they are foolishness. Thus testing requires spiritual rebirth.

Romans 12:9 gives the same command to 'hold fast to what is good' after abhorring evil, directly reinforcing the testing principle.

In Romans 12:2, Paul speaks of testing to discern God's will—parallel to testing everything and holding fast what is good.

In Acts 17:11, the Bereans examine Scriptures daily to test Paul's teaching—a model for testing everything.

In Matthew 7:15-20, Jesus teaches testing false prophets by their fruit—directly illustrating the command to test everything.

In 2 Timothy 1:13, Paul urges holding fast the pattern of sound words — identical 'hold fast' command.

In Titus 1:9, an elder must hold fast the faithful word — same 'hold fast' requirement applied to doctrine.

In Hebrews 5:14, mature believers discern good and evil — directly parallel to testing and holding what is good.

Amos 5:15 commands to 'hate evil, love good', mirroring the call to test and hold fast to good.

In Revelation 2:13, the church holds fast to Christ's name — same 'hold fast' verb, now for persevering faith.

Philippians 4:8 lists virtues to dwell on, offering a concrete guide for discerning what is good and worthy of holding fast.

1 Corinthians 2:11 reveals that only the Spirit knows God's thoughts—so testing spiritual things requires the Spirit's discernment.

2 Timothy 3:6 describes deceivers who exploit weak women, showing why testing everything is crucial.

Jeremiah 8:5 shows people clinging to deceit, contrasting with the command to hold fast to what is good.

Revelation 3:3 calls to 'keep' what was received, similar to holding fast, with an added warning to repent.

In Isaiah 8:20, the call to test by God's instruction—parallel to testing everything against Scripture.

In Luke 12:57, Jesus calls for personal judgment of what is right—echoing the call to test and discern what is good.