I was raised a Catholic and want to return to the church after many years. My question is the Bible I am supposed to read. I have the ESV study Bible and the NRSV Bible. Which is the best for the catholic faith?
If you want it in American English, The New American Bible Revised Edition, is the standard Bible for American English per the United States Council of Catholic Bishops. Other translations that are approved by the USCCB are:
Books of the New Testament, Alba House
Contemporary English Version - New Testament, First Edition, American Bible Society
Contemporary English Version - Book of Psalms, American Bible Society
Contemporary English Version - Book of Proverbs, American Bible Society
The Grail Psalter (Inclusive Language Version), G.I.A. Publications
New American Bible, Revised Edition (NABRE)
New Revised Standard Version, Catholic Edition, National Council of Churches
The Psalms, Alba House
The Psalms (New International Version) - St. Joseph Catholic Edition, Catholic Book Publishing Company
The Psalms - St. Joseph New Catholic Version, Catholic Book Publishing Company
Revised Psalms of the New American Bible (1991)
So You May Believe, A Translation of the Four Gospels, Alba House
Today's English Version, Second Edition, American Bible Society
Translation for Early Youth, A Translation of the New Testament for Children, Contemporary English Version, American Bible Society
Approval source: USCCB
For other nations who are English speakers, check with the council of Bishops for that nation.
Which is "best" depends a lot on personal preferences.