E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Out of Gods blessing into the warm sun. One of Rays proverbs, meaning from good to less good. Ab equis ad asinos. When the king says to Hamlet How is it that the clouds still hang on you? the prince answers, No, my lord, I am too much i the sun, meaning, I have lost Gods blessing, for too much of the suni.e. this far inferior state.
Thou out of heavens benediction comest
To the warm sun.
Shakespeare: King Lear, ii. 2.
To have it out. To contest either physically or verbally with another to the utmost of ones ability; as, I mean to have it out with him one of these days; I had it out with himi.e. I spoke my mind freely and without reserve. The idea is that of letting loose pent-up disapprobation.