In 1 John 2:28, abiding gives confidence at Christ's coming – echoing 2:5's assurance of being in him through keeping his word.

In 1 John 2:4, the negative counterpart: claiming to know but not obeying is false—contrasted with the one who keeps his word.

In 1 John 2:3, the same condition for knowing God is keeping commandments, directly linking to keeping his word here.

1 John 5:20 affirms we are in the true God through Jesus – confirming 2:5's 'we are in him' by pointing to Christ.

In 1 John 4:18, perfect love casts out fear – expanding on the 'love perfected' theme from 2:5, linking obedience to fearlessness.

In 1 John 4:16, abiding in love means abiding in God – directly extends 2:5's idea that love is perfected through obedience.

1 John 4:13 gives the Spirit as another basis for knowing we abide – complements 2:5's basis of keeping his word.

1 John 4:12 uses the same phrase 'love is perfected' but links it to loving one another—complementary aspect of the perfected love.

1 John 3:24 says keeping commandments gives assurance of abiding – nearly identical to 2:5, adding the Spirit as evidence.

In 1 John 4:17, the same phrase 'love perfected' appears, linking it to confidence on judgment day — directly reinforcing the assurance from keeping God's word.

1 John 4:15 connects confession of Jesus to abiding – a different aspect of assurance than 2:5's obedience-based assurance.

Colossians 2:9 states that all fullness of deity dwells in Christ — highlighting the divine source of our being in him.

2 Corinthians 5:21 reveals that Christ became sin so we might become God's righteousness in him — the ground for our union.

2 Corinthians 5:17 declares that anyone in Christ is a new creation — the transformation that accompanies being in him.

1 Corinthians 1:30 explains that in Christ we have wisdom, righteousness, sanctification, and redemption — the basis for being in him.

Romans 8:1 confirms that being 'in Christ Jesus' removes condemnation — directly linking to the assurance in 1 John 2:5.

In John 15:5, abiding in Christ is essential for fruitfulness — paralleling the perfected love and assurance found in keeping his word.

John 14:23 says keeping Jesus' word brings the Father and Son to make their home—similar to the abiding assurance in 1 John 2:5.

John 14:21 links keeping commandments with loving Jesus and being loved by the Father—the same linkage as love perfected through keeping word.

John 6:56 uses the same 'abide in me' language – eating Christ's flesh parallels 2:5's keeping his word as means of abiding.

In Luke 11:28, Jesus blesses those who hear and keep God's word—directly echoing the promise of perfected love for keeping word.

Ezekiel 36:27 promises God's Spirit to enable obedience—the divine power behind the keeping of word that perfects love.

John 15:10 connects keeping commandments with abiding in Christ's love — directly mirroring the obedience and love theme.

James 2:22 parallels this: faith is completed by works, just as love is perfected by keeping God's word – both link obedience to perfection.

Psalm 119:2 blesses those who keep his testimonies and seek him wholeheartedly, paralleling the keeping of his word that perfects love.

In Proverbs 8:32, wisdom promises blessing to those who keep her ways—echoing the blessing of keeping God's word that perfects love.