Repent therefore, and turn back, that your sins may be blotted out, that times of refreshing may come from the presence of the Lord, and that he may send the Christ appointed for you, Jesus,
(Acts 3:19-20 ESV)
Today, in the readings from Matthew 3 and Act 3, we read the same call to repentance. God repeatedly called his people to repentance in the Old Testament, we see today in two passages, that the call to repent is not lessened in the New Testament, and indeed, that call still goes forth today.
“Repentance (metanoia, ‘change of mind’) involves a turning with contrition from sin to God; the repentant sinner is in the proper condition to accept the divine forgiveness.” (F. F. Bruce. The Acts of the Apostles [Greek Text Commentary], London: Tyndale, 1952, p. 97.)
In Hebrews 3 we read:
Take care, brothers, lest there be in any of you an evil, unbelieving heart, leading you to fall away from the living God. But exhort one another every day, as long as it is called “today,” that none of you may be hardened by the deceitfulness of sin. For we have come to share in Christ, if indeed we hold our original confidence firm to the end. As it is said,
“Today, if you hear his voice,
do not harden your hearts as in the rebellion.”
(Hebrews 3:12-15 ESV)