The hand of God — God by the power of his grace inclined their hearts to an unanimous compliance with God's and the king's will. And this is mentioned as the reason of this wonderful change wrought in these men, who had lately been given up to idolatry.
Related Commentaries of 2 Chronicles 30:12
2 Chronicles 30:12
12 Also in Judah the hand of God was to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.