Hebrews 3:13-15

But continually encourage one another every day, as long as it is called “Today” [and there is an opportunity], so that none of you will be hardened [into settled rebellion] by the deceitfulness of sin [its cleverness, delusive glamour, and sophistication]. For we [believers] have become partakers of Christ [sharing in all that the Messiah has for us], if only we hold firm our newborn confidence [which originally led us to Him] until the end, while it is said, “TODAY [while there is still opportunity] IF YOU HEAR HIS VOICE, DO NOT HARDEN YOUR HEART, AS WHEN THEY PROVOKED ME [in the rebellion in the desert at Meribah].” [Ps 95:7, 8]