Every act resting on human wisdom, all service in ways devised by man, breaks the connection between God and man, and cuts man off from that union with God, through which God's blessing and help flow to men. All efforts to serve God in ways resting in human wisdom and in appointments not ordained by God, are but repetitions of David's effort to fight God's battles in Saul's armor. This cannot be done. God's battles cannot be fought with inventions and devices of men or by human skill and wisdom. The world is in ruin.
Man is a sinner, lost and hopeless.
God alone can save. Christ Jesus proposes to save through his servants, through his church. He will work through his church and his people only as they are faithful and true to him, as they will trust him and walk in his ways, drink into his Spirit, use his appointed instrumentalities, eschewing every thing that human wisdom proposes or human skill devises. Only then will God work in and through men. Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.