First Reading Hebrews 3:7-14
7Because of this, it is just as the Holy Spirit says: “If today you hear his voice,
8harden not your hearts, as in the provocation, the very day of temptation, in the desert,
9where your fathers tested me, even though they had seen and examined my works for forty years.
10For this reason, I was enraged against this generation, and I said: They always wander astray in heart. For they have not known my ways.
11So it is as I swore in my wrath: They shall not enter into my rest!”
12Be cautious, brothers, lest perhaps there may be, in any of you, an evil heart of unbelief, turning aside from the living God.
13Instead, exhort one another every day, while it is still called ‘today,’ so that none of you may become hardened through the falseness of sin.
14For we have been made participants in Christ. This is only so, if we firmly retain the beginning of his substance, even unto the end.
Catholic Public Domain Version
Read in the CPDV: The whole of Hebrews 3