2 Chronicles 15:8

8 Asa heard the prophecy of Azariah son of Obed, took a deep breath, then rolled up his sleeves, and went to work: He cleaned out the obscene and polluting sacred shrines from the whole country of Judah and Benjamin and from the towns he had taken in the hill country of Ephraim. He spruced up the Altar of God that was in front of The Temple porch.

2 Chronicles 15:8 Meaning and Commentary

2 Chronicles 15:8

And when Asa heard these words, and the prophecy of Oded the
prophet
Some think that besides the above words of Azariah the son of Oded, a prophecy of Oded his father was related by him, though not recorded; but rather Oded here is the same with the son of Oded; and so the Vulgate Latin and Syriac versions read Azariah the son of Oded; and so does the Alexandrian copy of the Septuagint version:

he took courage, and put away the abominable idols out of all the land
of Judah and Benjamin;
which were abominable to God, and all good men; besides the images and statues he had broken before, he removed other idols that remained, being animated and emboldened by the speech of the prophet:

and out of the cities which he had taken from Mount Ephraim:
the same which his father Abijah had taken from Jeroboam, ( 2 Chronicles 13:19 ) and which perhaps, upon the approach of the Ethiopians, revolted from Asa, or were restored by them to Jeroboam, and Which Asa retook upon his conquest of them:

and renewed the altar of the Lord before the porch of the Lord;
the altar of burnt offering, which had never been repaired since it was made by Solomon; perhaps he anew overlaid it with brass that being worn out, or become very thin in some places.

2 Chronicles 15:8 In-Context

6 Nation battered nation, city pummeled city. God let loose every kind of trouble among them.

7 "But it's different with you: Be strong. Take heart. Payday is coming!"

8 Asa heard the prophecy of Azariah son of Obed, took a deep breath, then rolled up his sleeves, and went to work: He cleaned out the obscene and polluting sacred shrines from the whole country of Judah and Benjamin and from the towns he had taken in the hill country of Ephraim. He spruced up the Altar of God that was in front of The Temple porch.

9 Then he called an assembly for all Judah and Benjamin, including those from Ephraim, Manasseh, and Simeon who were living there at the time (for many from Israel had left their homes and joined forces with Asa when they saw that God was on his side).

10 They all arrived in Jerusalem in the third month of the fifteenth year of Asa's reign