God's Grace is never unmerited.
There is always something a person has to do to merit God's Grace.
Romans 10:9-10
9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
If you don't accept Christ as your savior, you haven't merited God's Grace.
The only thing that God requires of us is that we believe in his Son Jesus Christ, Ephesians 1:13.