And he did that which was right in the sight of the LORD, but not with a perfect heart.

And he did what was good in the sight of the Lord: but yet not with a perfect heart.

and he doth that which is right in the eyes of Jehovah, only, not with a perfect heart.

He did what was right in the eyes of the Lord, but his heart was not completely true to the Lord.

And he did that which was right in the eyes of the LORD, but not with a whole heart.

And he accomplished good in the sight of the Lord. Yet truly, not with a perfect heart.

He did that which was right - He began his reign well, but soon became an idolater, 2-Chronicles 25:14, 2-Chronicles 25:15.

And he did [that which was] (a) right in the sight of the LORD, but not with a perfect heart.
(a) Meaning, in respect to his predecessors, though he had his imperfections.

But not, &c. - He was not an enemy to religion, but a cool and indifferent friend. He was not a man of serious piety; for his heart was not whole with God.