This [revelation, then,] is a means of insight for mankind, and a guidance and grace unto people who are endowed with inner certainty.

These are clear evidences to men and a Guidance and Mercy to those of assured Faith.

This is clear indication for mankind, and a guidance and a mercy for a folk whose faith is sure.

These are clear proofs for men, and a guidance and a mercy for a people who are sure.

This [Qur'an] is enlightenment for mankind and guidance and mercy for a people who are certain [in faith].