Charles H. Spurgeon on Psalms 119:173

Let thine hand help me. David having before made promises of thankfulness, seeks now help from God, that he may perform them. Our sufficiency is not of ourselves, but of God; to will and to do are both from him. In temporal things men ofttimes take great pains with small profit; first, because they seek not to make their conscience good; next, because they seek not help front God: therefore they speed no better than Peter, who fished all night and got nothing till he cast his net in the name of the Lord. But in spiritual things we may far less look to prosper, if we call not for God's assistance: the means will not profit us unless God's blessing accompany them. There is preaching, but for the most part without profit; there is prayer, but it prevails not; there is hearing of the word, but without edifying; and all because in spiritual exercises instant prayer is not made unto God, that his hand may bc with us to help us. Abraham Wright.