One of my favorite hymns:
By grace I am an heir of heaven, why doubt this, O my trembling heart? If what the Scriptures promise clearly is true and firm in every part, this also must be truth divine; by grace a crown of life is mine.
By grace alone shall I inherit that blissful home beyond the skies. Works count for naught, the Lord incarnate has won for me the heavenly prize. Salvation by his death he wrought, his grace alone my pardon bought.
By grace! These precious words remember when sorely by your sins oppressed, when Satan comes to vex your spirit, when troubled conscience sighs for rest; what reason cannot comprehend, God does to you by grace extend.
By grace! Be this in death my comfort; despite my fears, 'tis well with me. I know my sin in all its greatness, but also him who sets me free. My heart to naught but joy gives place since I am saved by grace, by grace.