David has forgotten that God is the God of principle and will not break it for anyone. Not even for Jesus. When God says the wages of sin is death in Romans 3:23, He meant it. Jesus had to die because He was carrying the sin of the whole world, both born then and unborn, as many that believe in Him shall be saved. Over 2000 years, His death is still a saving grace for us out of sin till date. This implies that, any sinner who believe in Jesus, confess his/her sins to Him and accept Him as his/her personal Lord and saviour will not have to die for his/her sin again, but shall be saved. Because Jesus has paid the price once and for all.