The story
From be- + cross. Compare Saterland Frisian bekjuusje (“to becross”), West Frisian bekruse (“to becross”), Dutch bekruisen (“to becross”), German Low German bekrüzen, bekrüzigen (“to becross”), German bekreuzen, bekreuzigen (“to becross”). Compare also Middle English becroisen (“to come across”).
Etymology from Wiktionary, CC BY-SA 4.0.