World English Bible

Hebrews 3:13

“but exhort one another day by day, so long as it is called "today;" lest any one of you be hardened by the deceitfulness of sin.”

Verse in context — Hebrews 3

as I swore in my wrath, 'They will not enter into my rest.

Beware, brothers, lest perhaps there be in any one of you an evil heart of unbelief, in falling away from the living God;

but exhort one another day by day, so long as it is called "today;" lest any one of you be hardened by the deceitfulness of sin.

For we have become partakers of Christ, if we hold fast the beginning of our confidence firm to the end:

while it is said, "Today if you will hear his voice, don't harden your hearts, as in the rebellion.

Jesus as the ultimate High Priest and fulfillment of the Old Covenant.