When Jaime arrives at Winterfell to help support Daenerys's fight against the Night King, Tyrion stands up for him: "He came here knowing full well how he'd be received. Why would he do that if he weren't telling the truth?" The statement, along with an endorsement from Brienne and Sansa, convince Daenerys of the Kingslayer's honour. Jaime helps the Northerners prepare for the Great War and lives up the expectations set upon him — even knighting Brienne after Tyrion points out she's never had the honour.