現在詩人的信心不再受物質因素影響，他滿有信心地安息在神裡面，他說了一句有趣的話：「我的肉體和我的心腸衰殘；但神是我心裡的力量，又是我的福份，直到永遠」（詩七十三26）。有些聖經學者認為他的意思是，在他年老時肉體將會敗壞，另一些人則說他當時正經歷某些身體的毛病。兩者都有可能。當他瞻望未來時，他知道當自己成為老人的時候，他的心和肉體都會衰殘。他將不能照顧自己，但那也沒有問題，他說：「因為無論發生什麼事，神仍然是我心裡的力量。」

另一種解釋認為詩人的話是指他當時的身體狀況，該學者說：「假若你沒有受過身體的苦楚，就沒法經歷他的屬靈經驗。因著疾病，他的神經可能處於惡劣的狀況，而他的心也會受這壓力所影響。然而他仍然肯定神是他的力量。」

一般人都同意翻譯為「力量」的詞，與「石頭」是同一個字，因此這節經文可以翻譯為：「神是我心裡的石頭和我的福份，直到永遠。」這是多麼懾人的思想──神是我的磐石。正如一位威爾斯講員說：「我很多次站在磐石上顫抖，但卻從來沒有一次是磐石在我下面顫抖的。」

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."