Matthew 3:10

And already is the axe lying at the root of the trees; every tree therefore that beareth not good fruit is to be cut down, and cast into the fire.

Acts 3:19

Repent therefore and turn from your ways, that your sins may be blotted out, in order that the 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 is the axe lying at the root of the trees; every tree therefore that beareth not good fruit is to be cut down, and cast into the fire.
Acts 3:19
Repent therefore and turn from your ways, that your sins may be blotted out, in order that the times of refreshing may come from the presence of the Lord,