Charles H. Spurgeon on Psalms 144:1

To war, ...to fight. I want to speak of a great defect among us, which often prevents the realization of going "from strength to strength"; viz., the not using, not trading with, the strength given. We should not think of going to God for money only to keep it in the bank. But are we not doing this with regard to strength? We are constantly asking for strength for service; but if we are not putting this out in hearty effort, it is of no use to us. Nothing comes of hoarded strength. "Blessed be the Lord my strength, which teacheth my hands to war, and my finger to fight." David, you see, was looking for strength for a purpose. Some people seem to expect strength, but never attempt to put forth their hands to war, and their fingers to fight —there is so little venturing upon God, so little use of grace given, partly from fear of man, partly from indolence and worldly mindedness. It is not for us to be merely luxuriating in the power which God supplies. Action strengthens, and before we have a right to ask for an increase, we must use that already given. —Catherine Pennefather, in "Service," 1881.