Charles H. Spurgeon on Psalms 55:18

He hath delivered my soul in peace from the battle that was against me. The deliverance has come. Joab has routed the rebels. The Lord has justified the cause of his anointed. Faith sees as well as foresees; to her foresight is sight. He is not only safe but serene, delivered in peace —peace in his inmost soul. For there were many with me; many contending against me. Or it may be that he thankfully acknowledges that the Lord raised him up unexpected allies, fetched him succour when he most needed it, and made the friendless monarch once more the head of a great army. The Lord can soon change our condition, and he often does so when our prayers become fervent. The crisis of life is usually the secret place of wrestling. Jabbok makes Jacob a prevailing prince. He who stripped us of all friends to make us see himself in their absence, can give them back again in greater numbers that we may see him more joyfully in the fact of their presence.