Matthew 3:10

and already the axe lies at the root of the trees; every tree, therefore, which bears not good fruit is cut down and cast into the fire.

Acts 3:19

Change your minds, therefore, and turn yourselves, that your sins may be blotted out, that times of refreshing may come from the presence of the Lord,

Treasury of Scripture Knowledge

Summary

If he turn not, he will whet his sword; he hath bent his bow, and made it ready.

Bible References

If

Matthew 3:10
and already the axe lies at the root of the trees; every tree, therefore, which bears not good fruit is cut down and cast into the fire.
Acts 3:19
Change your minds, therefore, and turn yourselves, that your sins may be blotted out, that times of refreshing may come from the presence of the Lord,