Can you make the claim in the title like the psalmist David did? I find I can’t; at least not consistently. But I want to. I want to very much.
I have set the Lord always before me;
because he is at my right hand, I shall not be shaken.
Therefore my heart is glad, and my whole being rejoices;
my flesh also dwells secure.
Psalm 16:8-9 English Standard Version (ESV)
Calvin says with regard to verse 8:
…The meaning, therefore, is, that David kept his mind so intently fixed upon the providence of God, as to be fully persuaded, that whenever any difficulty or distress should befall him, God would be always at hand to assist him.
He adds, also, [always], to show us how he constantly depended upon the assistance of God, so that, amidst the various conflicts with which he was agitated, no fear of danger could make him turn his eyes to any other quarter than to God in search of succor.
…David then reckons himself secure against all dangers, and promises himself certain safety, because, with the eyes of faith, he beholds God as present with him.
And with regard to verse 9:
In short, calmly to rejoice is the lot of no man but of him who has learned to place his confidence in God alone, and to commit his life and safety to his protection.
When, therefore, encompassed with innumerable troubles on all sides, let us be persuaded, that the only remedy is to direct our eyes towards God; and if we do this, faith will not only tranquillize our minds, but also replenish them with fullness of joy.
…Farther, although the body is not free from inconveniences and troubles, yet as God defends and maintains not only our souls, but also our bodies, David does not speak groundlessly when he represents the blessing of dwelling in safety as extending to his flesh in common with his soul.
David’s statements in verses 8 and 9 pertain to us if we’ve trusted in Christ. However, verse 10 does not.
For you will not abandon my soul to Sheol,
or let your holy one see corruption.
Psalm 16:10 (ESV)
This verse didn’t even apply to David as the Apostle Peter rightly points out in his sermon at Pentecost. Peter uses this psalm (esp. verse 10) as a testimony of Christ’s resurrection. The passage is found in Acts of the Apostles, chapter 2, verses 25-28 (ESV).
We serve a risen Lord always ready to provide mercy and grace in our time of need. Call to Him.