Charles H. Spurgeon on Psalms 18:6

"In my distress I called upon the Lord, and cried unto my God." Prayer is that postern gate which is left open even when the city is straitly besieged by the enemy; it is that way upward from the pit of despair to which the spiritual miner flies at once when the floods from beneath break forth upon him. Observe that he calls, and then cries; prayer grows in vehemence as it proceeds. Note also that he first invokes his God under the name of Jehovah, and then advances to a more familiar name, "my God;" thus faith increases by exercise, and he whom we at first viewed as Lord is soon seen to be our God in covenant. It is never an ill time to pray; no distress should prevent us from using the divine remedy of supplication. Above the noise of the raging billows of death, or the barking dogs of hell, the feeblest cry of a true believer will be heard in heaven. "He heard my voice out of his temple, and my cry came before him, even into his ears." Far up within the bejewelled walls, and through the gates of pearl, the cry of the suffering suppliant was heard. Music of angels and harmony of seraphs availed not to drown or even to impair the voice of that humble call. The king heard it in his palace of light unsufferable, and lent a willing ear to the cry of his own beloved child. O honoured prayer, to be able thus through Jesus' blood to penetrate the very ears and heart of Deity. The voice and the cry are themselves heard directly by the Lord, and not made to pass through the medium of saints and intercessors; "My cry came before Him;" the operation of prayer with God is immediate and personal. We may cry with confident and familiar importunity, while our Father himself listens.