I am persuaded that I shall obtain the highest amount of present happiness, I shall do most for God's glory and the good of man, and I shall have the fullest reward in eternity, but maintaining a conscience always washed in Christ's blood, by being filled with the Holy Spirit at all times, and by attaining the most entire likeness to Christ in mind, will, and heart, that it is possible for a redeemed sinner to attain to in this world.

Memoir and Remains of the Rev. Robert Murray M'Cheyne: Minister of St. Peter's Church, Dundee (ed. 1846)