Hebrews 3:13

Hebrews 3:13 (ASV)
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:

1 Thessalonians 5:8

1 Thessalonians 5:8 (ASV)
But let us, since we are of the day, be sober, putting on the breastplate of faith and love; and for a helmet, the hope of salvation.