He doesn't lure souls into Christ by offering a gift that He says we receive through faith to then demand that unless we ALSO do good works we don't get to keep the gift.

Luke 7:50
"Your faith has saved you. Go in peace."

By now; SURELY you PROTS know that not EVERYTHING is written in the Bible.

Could GOD not ALSO have said...

"Your baptism has saved you.
"Your confirmation has saved you.
"Your obedience to Rome has saved you.
"Your Adoration to Mary has saved you.
"Your Veneration of Mary has saved you.
"Your Love of Mary has saved you.
"Your faithful praying of the Rosary has saved you.
"Your taking of multitudes of Eucharist wafers has saved you.
"Your adherence of ALL church teaching has saved you.

WHY do you limit GOD?!?!?!?!