Translation
again He appointed a certain day, calling it “Today,” saying through DAVID a long time later, just it had been said earlier, “Today, if you should hear His voice, do not harden your hearts.”
Paraphrase
God’s gracious offer is obvious because God makes it available on a day that is called “Everyday,” and He explained it through THE ONE WHO IS LOVED a long time after it had been explained the first time – “On this special day, if you happen to hear His voice, make sure you don’t harden your hearts.”