That means he never makes mistakes...not ever.
Seek the Lord while he may be found;
call on him while he is near.
Let the wicked forsake their ways
and the unrighteous their thoughts.
Let them turn to the Lord, and he will have mercy on them,
and to our God, for he will freely pardon.
“For my thoughts are not your thoughts,
neither are your ways my ways,”
declares the Lord.
As the heavens are higher than the earth,
so are my ways higher than your ways
and my thoughts than your thoughts.
Isaiah 55 v 6 - 9