Heaven & Hell
Will I know my family and friends in heaven?
Scripture doesn't give a direct, explicit promise here. It's honest to say this is more inference than stated doctrine—though it's a reasonable inference many Christians hold with real confidence.
One clue comes from the Transfiguration. Peter, James, and John recognize Moses and Elijah—people who died centuries earlier, whom none of the disciples had ever met. That suggests recognition across death isn't something a resurrected, renewed state removes.
Paul also writes that we currently "know in part," but one day will "know fully." That points toward more complete knowledge and connection in the future, not less. If anything, it points away from losing relationships you already have.
None of this is a flat, guaranteed promise naming your specific loved ones. It's a reasonable, widely held hope, built from a few real clues rather than something Scripture spells out in detail.
Bible quotations in these answers are generally taken from the Christian Standard Bible®, Copyright © 2017 by Holman Bible Publishers. Used by permission. Christian Standard Bible® and CSB® are federally registered trademarks of Holman Bible Publishers. Some biblical wording may be paraphrased or follow other translations.