Matthew 3:8

Demonstrate by your lives that you have [really] repented,

Acts 3:19

Therefore, you people [must] repent [i.e., change your hearts and lives] and turn [back] again [to God] so that your sins will be blotted out and so that you may enjoy times of [spiritual] refreshment from the presence of the Lord [i.e., through the indwelling of the Holy Spirit].

Acts 26:20

but, [instead] declared to the people of Damascus first, [then] to the people of Jerusalem, and [finally to those] throughout all of the district of Judea, as well as to the Gentiles [everywhere] that they should repent [i.e., change their hearts and lives] and turn to God, doing deeds which demonstrate their repentance.

Treasury of Scripture Knowledge

Summary

But let man and beast be covered with sackcloth, and cry mightily unto God: yea, let them turn every one from his evil way, and from the violence that is in their hands.

General references

Bible References

Let

Matthew 3:8
Demonstrate by your lives that you have [really] repented,
Acts 3:19
Therefore, you people [must] repent [i.e., change your hearts and lives] and turn [back] again [to God] so that your sins will be blotted out and so that you may enjoy times of [spiritual] refreshment from the presence of the Lord [i.e., through the indwelling of the Holy Spirit].
Acts 26:20
but, [instead] declared to the people of Damascus first, [then] to the people of Jerusalem, and [finally to those] throughout all of the district of Judea, as well as to the Gentiles [everywhere] that they should repent [i.e., change their hearts and lives] and turn to God, doing deeds which demonstrate their repentance.

General references

Acts 9:9
For three days he was blind and neither ate nor drank anything.