I found these words very encouraging and they summarized for me, what righteousness by faith can achieve.
E. J. Waggoner – The Gospel in Creation pgs. 108 - 109
In Him all things consist. That same word that spoke the universe into existence, which said to the earth, "Bring forth grass," speaks to us in the words of God's law. But His law is not a hard, lifeless decree, which weak mortals are to strive in vain to keep, while God watches them with a stern eye, ready to taunt and punish them for failure; but we "know that His commandment is life everlasting." 149 1 That word which says to us, "Thou shalt love the Lord thy God with all thy heart, and thy neighbour as thyself," sheds that love abroad in our hearts, just as the word of God brings forth the fruit in the plant. Then well may we sing:-
"How gentle God's commands!
How kind His precepts are!
Come, cast your burdens on the Lord,
And trust His constant care.
"Beneath His watchful eye
His saint securely dwell;
That hand that bears all nature up
Shall guard His children well.
"Why should this anxious load
Press down your weary mind?
Haste to your Heavenly Father's throne,
And sweet refreshment find.
"His goodness stands approved
Through each succeeding day;
I'll drop my burden at His feet,
And bear a song away."