Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)
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Hebrews 10:21-25
Tyndale Open Study Notes (CC BY-SA 4.0).
10:23 We are to hold tightly . . . to the hope we affirm, that Christ’s death is effective in winning us right relationship with God.
Other Bible passages linked to this one, most cited first.
Faithful is he that calleth you, who also will do it.
God is faithful, by whom ye were called unto the fellowship of his Son Jesus Christ our Lord.
But the Lord is faithful, who shall stablish you, and keep you from evil.
That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us:
In hope of eternal life, which God, that cannot lie, promised before the world began;
But Christ as a son over his own house; whose house are we, if we hold fast the confidence and the rejoicing of the hope firm unto the end.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.