New Living Translation
You must warn each other every day, while it is still “today,” so that none of you will be deceived by sin and hardened against God.

American Standard Version
but exhort one another day by day, so long as it is called To-day; lest any one of you be hardened by the deceitfulness of sin:

Berean Study Bible
But exhort one another daily, as long as it is called today, so that none of you may be hardened by sin’s deceitfulness.

Douay-Rheims Bible
But exhort one another every day, whilst it is called to day, that none of you be hardened through the deceitfulness of sin.

English Revised Version
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:

King James Bible
But exhort one another daily, while it is called To day; lest any of you be hardened through the deceitfulness of sin.

World English Bible
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.

Young's Literal Translation
but exhort ye one another every day, while the To-day is called, that none of you may be hardened by the deceitfulness of the sin,

Hebrews 3:13 Additional Translations ...