A blameless life

As might be expected, the notes by Charles Spurgeon and others on Psalm 119, in The Treasury of David, are extensive.  Here's is just one paragraph from Spurgeon's own comments on verse one:  

How blessed are those whose way is blameless,
Who walk in the law of the Lord. [NASB]
 

He whose life is in a gospel sense undefiled, is blessed, because he could never have reached this point if a thousand blessings had not already been bestowed on him. By nature we are defiled and out of the way, and we must therefore have been washed in the atoning blood to remove defilement, and we must have been converted by the power of the Holy Ghost, or we should not have been turned into the way of peace, nor be undefiled in it. Nor is this all; for the continual power of grace is needed to keep a believer in the right way, and to preserve him from pollution. All the blessings of the covenant must have been in a measure poured upon those who from day to day have been enabled to perfect holiness in the fear of the Lord. Their way is the evidence of their being the blessed of the Lord. David speaks of a high degree of blessedness; for some are in the way, and are true servants of God; but they are as yet faulty in many ways, and bring defilement upon themselves. Others who walk in the light more fully, and maintain closer communion with God, are enabled to keep themselves unspotted from the world; and these enjoy far more peace and joy than their less watchful brethren. Doubtless, the more complete our sanctification the more intense our blessedness. Christ is our way, and we are not only alive in Christ, but we are to live in Christ: the sorrow is, that we bespatter his holy way with our selfishness, self-exaltation, willfulness, and carnality, and so we miss a great measure of the blessedness which is in him as our way. A believer who errs is still saved, but the joy of his salvation is not experienced by him; he is rescued, but not enriched; greatly borne with, but not greatly blessed.