The reading for today is taken from the Letter to the Hebrews 3:7-14: It is a good start for our meditation:
"The Holy Spirit says: 'Oh, that today you would hear his voice, 'Harden not your hearts as at the rebellion in the day of testing in the desert, where your ancestors tested and tried me and say my works for forty years. Because of this I was provoked with that generation and I said, 'They have always been of erring heart, and they do not know my ways.' As I swore in my wrath, 'They shall not enter into my rest.'"
"Take care, brothers and sisters, that none of you may have an evil and unfaithful heart, so as to forsake the living God. Encourage yourselves daily while it is still "today," so that none of you may grow hardened by the deceit of sin. We have become partners of Christ if only we hold the beginning of the reality firm until the end.