Hebrews 3:6 gives the same condition: we are Christ's house if we hold fast our confidence until the end — directly parallel to holding fast our assurance.

Hebrews 6:11 echoes the call to hold fast until the end, using 'full assurance of hope' — a parallel to 'beginning of our assurance'.

Hebrews 6:4 describes those who have shared in the Holy Spirit yet may fall away, reinforcing the conditional perseverance in Hebrews 3:14.

In Hebrews 10:23, 'hold fast the confession of hope' directly parallels the condition in 3:14 of holding confidence without wavering.

In Hebrews 4:14, 'hold fast our confession' echoes the same perseverance needed to hold confidence steadfast from 3:14.

In Hebrews 4:3, entering God's rest is for believers—the same condition of steadfast faith required in 3:14 to remain partakers.

In Hebrews 11:1, faith is 'hypostasis' (assurance)—the same Greek term used in 3:14 for the 'confidence' that must be held firm.

In Hebrews 10:35, readers are urged not to throw away their confidence—the same quality they must hold steadfast from 3:14.

Hebrews 12:10 speaks of sharing in God's holiness through discipline—a different object of sharing, but the same concept of partaking.

In 1 John 1:3, the same concept of sharing in Christ is expressed as 'fellowship' with the Father and Son — our partaking in Christ is relational participation.

1 Corinthians 1:30 says believers are in Christ Jesus, who became wisdom, righteousness, sanctification, redemption—deepening the meaning of sharing in Christ.

Ephesians 3:6 reveals Gentiles as fellow partakers of the promise in Christ—expanding the scope of sharing in Hebrews 3:14.

Philippians 4:1 exhorts believers to 'stand fast in the Lord' — directly paralleling the call to hold our confidence steadfast to the end.

1 Thessalonians 3:8 says 'we live, if you stand fast in the Lord' — directly echoing the condition of holding steadfast to the end.

Colossians 1:23 conditions salvation on continuing 'grounded and steadfast' in faith — mirroring Hebrews 3:14's call to hold confidence to the end.

1 Corinthians 15:2 conditions salvation on holding fast the gospel—the same 'hold firm' condition for sharing in Christ.

1 Corinthians 10:16 uses 'participation' (koinonia) in Christ's body and blood—defining the sharing in Christ mentioned here.

1 Corinthians 1:9 says God calls us into fellowship with Christ—the same 'sharing in Christ' that requires holding firm here.

Romans 11:22 warns to continue in God's kindness or be cut off—the same conditional perseverance as holding firm to the end.

Matthew 10:22 promises salvation to those who endure to the end — the same perseverance theme as holding fast our assurance until the end.

Mark 13:13 promises salvation to those who endure to the end—directly echoing the condition for sharing in Christ here.

In 1 John 2:24, abiding in what was heard from the beginning parallels the call in Hebrews 3:14 to hold initial confidence to the end.

1 Peter 4:13 calls believers to share Christ's sufferings now for future glory—a specific form of sharing in Christ's experiences.

1 Timothy 1:19 warns against rejecting faith and good conscience, leading to shipwreck — akin to the danger of not holding steadfast in Hebrews 3:14.

Colossians 1:12 uses the same 'partakers' (metochoi) for the inheritance — echoing the concept of sharing in Christ's benefits.

John 8:31 conditions true discipleship on abiding in Jesus' word—parallel to holding firm to the end for sharing in Christ.

In Philemon 1:17, Paul uses the same 'partner' (koinonos) concept, reflecting the mutual participation believers share in Christ.

1 Peter 5:1 describes Peter as a partaker of the glory to be revealed—connecting present sharing in Christ to future glory.

In 2 Peter 3:17, believers are warned not to lose their steadfastness—the opposite of holding firm as required in Hebrews 3:14.

1 Corinthians 9:23 shows Paul striving to share in the gospel's blessings—a parallel pursuit of partaking in what Christ offers.

Romans 11:17 describes Gentiles being grafted in to share in the root—a parallel image of partaking in Christ's blessings.