Berean Study Bible (BSB) - Hebrews 3:8 >

do not harden your hearts, as you did in the rebellion, in the day of testing in the wilderness,

Textus Receptus (TR) - Hebrews 3:8 >

μὴ σκληρύνητε τὰς καρδίας ὑμῶν, ὡς ἐν τῷ παραπικρασμῷ, κατὰ τὴν ἡμέραν τοῦ πειρασμοῦ ἐν τῇ ἐρήμῳ,