He was on the side of toleration and protected the reformers.
The reformation as such had no favourable influence on Jewish fortunes in Christian Europe, though the championship of the cause of toleration by Reuchlin had considerable value.
Complete toleration in fact was only extended to Protestant nonconformists, who composed the Cromwellian established church, and who now meted out to their antagonists the same treatment which they themselves were later to receive under the Clarendon Code of Charles II.
In accordance with his former action on all questions of religious toleration he opposed the shameful Five Mile Act of 1665.
In general the toleration enjoyed under Cromwell was probably far larger than at any period since religion became the contending ground of political parties, and certainly greater than under his immediate successors.