KJV: But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.
NASB: But encourage one another day after day, as long as it is still called "Today," so that none of you will be hardened by the deceitfulness of sin.
KJV: Again, he limiteth a certain day, saying in David, To day, after so long a time; as it is said, To day if ye will hear his voice, harden not your hearts.
NASB: He again fixes a certain day, "Today," saying through David after so long a time just as has been said before, "TODAY IF YOU HEAR HIS VOICE, DO NOT HARDEN YOUR HEARTS."
KJV: For when for the time ye ought to be teachers, ye have need that one teach you again which be the first principles of the oracles of God; and are become such as have need of milk, and not of strong meat.
NASB: For though by this time you ought to be teachers, you have need again for someone to teach you the elementary principles of the oracles of God, and you have come to need milk and not solid food.