Thoughts are to be repented of. Yea, repentance is expressed as to begin at the thoughts, “Let the unrighteous man [forsake] his thoughts” (Isa 55:7). And a man is never truly and thoroughly wrought on until his “every thought” is brought into “obedience” (2Co 10:5), which argues that they are naturally rebellious and contrary to grace. And this also argues the power of grace, which is able to rule and subdue so great an army as our thoughts are, to command them all, now, as well as in the day when we are perfectly holy.
