“Isaiah issues a clarion call in the name of the Lord: ‘Let the wicked forsake his way, and the unrighteous man his thoughts.’ He is not calling upon His people to become irrational when He tells them to ‘forsake their thoughts.’ He is commanding them to cease from pursuing Him according to their perceptions of what is or is not pleasing in His sight.
This is followed by a contrast between the thoughts of God and the thoughts of man, in which it is declared that the Lord's thoughts are infinitely higher than man's. The plain fact of the matter is that man is incapable of conceiving through his own understanding what is pleasing to the Lord. The basis of all false worship is the prideful presumption that man is able to contrive means of approaching God with which He will be pleased.
Man finds great satisfaction in the inventions that he brings to the Lord's house: ‘They have chosen their own ways, and their soul delights in their abominations’ (66:3). Yet God proclaims his verdict: ‘They did evil before My eyes, and chose that in which I do not delight’ (66: 4). All of this is predicated upon God's transcendence: ‘Heaven is My throne, and earth is my footstool. Where is the house that you will build for Me?’ (66:1). Therefore Calvin says, ‘if men diligently considered what is the nature of God, they would not contrive foreign and new modes of worship for him, or measure him by themselves.’
God delights not in our proud creativity, but in our humble obedience before Him.” (Comin, 222-223)