现在诗人的信心不再受物质因素影响，他满有信心地安息在神里面，他说了一句有趣的话：「我的肉体和我的心肠衰残；但神是我心里的力量，又是我的福份，直到永远」（诗七十三26）。有些圣经学者认为他的意思是，在他年老时肉体将会败坏，另一些人则说他当时正经历某些身体的毛病。两者都有可能。当他瞻望未来时，他知道当自己成为老人的时候，他的心和肉体都会衰残。他将不能照顾自己，但那也没有问题，他说：「因为无论发生什么事，神仍然是我心里的力量。」

另一种解释认为诗人的话是指他当时的身体状况，该学者说：「假若你没有受过身体的苦楚，就没法经历他的属灵经验。因着疾病，他的神经可能处于恶劣的状况，而他的心也会受这压力所影响。然而他仍然肯定神是他的力量。」

一般人都同意翻译为「力量」的词，与「石头」是同一个字，因此这节经文可以翻译为：「神是我心里的石头和我的福份，直到永远。」这是多么慑人的思想──神是我的磐石。正如一位威尔斯讲员说：「我很多次站在磐石上颤抖，但却从来没有一次是磐石在我下面颤抖的。」

Now that the psalmist's faith is no longer conditioned by material factors, and he is confidently resting in God, he makes this interesting statement: "My flesh and my heart may fail, but God is the strength of my heart and my portion for ever" (Psa. 73:26). Some commentators say he is referring here to the time when his flesh will decay through old age, while others say he was experiencing some physical problems at that very time. Both may be right. When he looks into the future he knows a time will come when he will be an old man when his heart and flesh will fail. He will be unable to look after himself but it will still be all right, says this man, "For whatever may happen, God will still be the strength of my heart."

A commentator who feels the psalmist's words have a direct bearing on his physical condition at that time says this: "You cannot pass through a spiritual experience such as this man passed through without your physical body suffering. His nerves would be in a bad state and his heart would have been affected by the strain. Nevertheless he still affirms that God is his strength."

It is generally agreed that the word which is translated "strength" is the word for "rock", and so the verse may justifiably be translated: "God is the rock of my heart and my portion for ever." What a thrilling thought this is God is my Rock. As one Welsh preacher put it: "There are many occasions when I tremble as I stand upon the Rock, but there are never any occasions when the Rock trembles under me."