Tertullian

Since also he makes mention of no other god (and he could have found no other opportunity of doing so, more suitable than when his purpose was to set forth the reason for the abolition of the law-especially as the prescription of a new god would have afforded a singularly good and most sufficient reason), it is clear enough in what sense he writes, "I marvel that ye are so soon removed from Him who hath called you to His grace to another gospel" -He means) "another" as to the conduct it prescribes, not in respect of its worship; "another" as to the discipline it teaches, not in respect of its divinity; because it is the office of Christ's gospel to call men from the law to grace, not from the Creator to another god.

Is he then the same God as He who gave Satan power over the person of Job that his "strength might be made perfect in weakness? " How is it that the censurer of the Galatians still retains the very formula of the law: "In the mouth of two or three witnesses shall every word be established? " How again is it that he threatens sinners "that he will not spare" them -he, the preacher of a most gentle god? Yea, he even declares that "the Lord hath given to him the power of using sharpness in their presence!" Deny now, O heretic, (at your cost, ) that your god is an object to be feared, when his apostle was for making himself so formidable!