Psalms 90:12

So teach us to number our days,.... Not merely to count them, how many they are, in an arithmetical way; there is no need of divine teachings for that; some few instructions from an arithmetician, and…

So teach us to number our days - literally, “To number our days make us know, and we will bring a heart of wisdom.” The prayer is, that God would instruct us to estimate our days aright: their number;…

These are the petitions of this prayer, grounded upon the foregoing meditations and acknowledgments. Is any afflicted? Let him learn thus to pray. Four things they are here directed to pray for: -

I.…

So teachus] Sothen, as Thy fear (Psa 90:90) which is "the beginning of wisdom" requires, makeus knowhow &c.: give us that discernment which we lack.

that we may apply&c. That we may get us an heart of…