1 Corinthians 15:13-15

Amplified Bible

¹³ But if there is no resurrection of the dead, then not even Christ has been raised; ¹⁴ and if Christ has not been raised, then our preaching is vain [useless, amounting to nothing], and your faith is also vain [imaginary, unfounded, devoid of value and benefit—not based on truth]. ¹⁵ We are even discovered to be false witnesses [misrepresenting] God, because we testified concerning Him that He raised Christ, whom He did not raise, if in fact the dead are not raised.