Job 41:11

no man can give God anything, which he has not first given him, or which he has not a prior right to, or a claim upon him for; Adam, in innocence, was not able to give God anything, nor are the angels in heaven, much less sinful men on earth; their bodies and souls, and all their enjoyments, all that is good in them, or done by them, are from the Lord; men by all their good works, best duties and services, give nothing to God, nor lay him under any manner of obligation to them: hence no man can merit anything at the hands of God, if he could,it shall be recompensed to him again; but it is impossible there should be merit in a creature, who has nothing but what he has from God, and does nothing but what he is obliged to do; and that not by his own strength, but by the grace and strength of God; and therefore there is no retribution made by God as of debt, but of grace: hence it follows, that God is indebted to, and obliged by none, and may do what he will with his own; love Jacob and hate Esau; choose one and not another; reject the Jews, and call the Gentiles; save and justify some, and not others; none can call him to account, or say unto him, what dost thou?