"to love what you command and to desire what you promise"

"O God, who cause the minds
     of the faithful
to unite in a single purpose,
grant your people to love
     what you command
and to desire what you promise,
that, amid the uncertainties of this world,
our hearts may be fixed on that place
where true gladness is found.
Through. . . ."

"Deus, qui fidelium mentes unius efficis voluntatis,
da populis tuis id amare quod praecipis,
id desiderare quod promittis,
ut, inter mundanas varietates,
ibi nostra fixa sint corda, ubi vera sunt gaudia.
Per. . . ."

     Collect for the Twenty-First Sunday in Ordinary Time (2010), as well as Monday of the Fifth Week of Easter, Roman missal.
     Corpus orationum no. 1633A-B (vol. 2, pp. 338-339):  Gelasian sacramentary, as well as others from the 8th century (Gellon 925; Prag 114,1; Rhen 554; et al.); Bruylants no. 342 (vol. 2, p. ).

"Almighty God, you alone can bring into order the unruly wills and affections of sinners:  Grant your people grace to love what you command and desire what you promise; that, among the swift and varied changes of the world, our hearts may surely there be fixed where true joys are to be found; through. . . ."

     Collect for the Fifth Sunday in Lent (Contemporary), Book of common prayer (1979).

"O Almighty God, who alone canst order the unruly wills and affections of sinful men; Grant unto thy people, that they may love the thing which thou commandest, and desire that which thou dost promise, that so among the sundry, and manifold changes of the world, our hearts may surely there be fixed, where true joys are to be found, through. . . ."

     Collect for the Fourth Sunday after Easter, Book of common prayer (1662), as reproduced in The book of common prayer:  the texts of 1549, 1559, and 1662, ed. Brian Cummings (New York:  Oxford University Press, 2011), 330.

"Almightie God, whiche doest make the myndes of all faythfull men to be of one wil; graunt unto thy people, that they maye loue the thyng, whiche thou commaundest, and desyre, that whiche thou doest promes; that emong the sondery and manifold chaunges of the worlde, oure heartes maye surely there bee fixed, wheras true ioyes are to be founde; through.  . .

     Collect for the Fourth Sunday after Easter, Book of common prayer (1549), as reproduced in The first and second prayer books of Edward  VI, Everyman's library 448 (London:  J. M. Dent & Sons Ltd.; New York:  E. P. Dutton & Co. Inc., 1938 [1910]), 123.

Father,
help us to seek the values
that will bring us lasting joy in this changing world.
In our desire for what you promise
make us one in mind and heart.

     Collect for the Twenty-First Sunday in Ordinary Time (1973), as well as Monday of the Fifth Week of Easter, Roman missal, as reproduced by Fr. Z.

     Similar is the even older Collect for the Thirtieth Sunday in Ordinary Time, which is Corpus orationum no. 3819/Bruylants no. 579 (6th/8th century Leonine sacramentary no.  598; 8th-century Old Gelasian no. 1209; etc.):

"Almighty ever-living God, increase our faith, hope and charity, and make us love what you command, so that we may merit what you promise. Through".

"Omnipotens sempiterne deus, da nobis fidei, spei et caritatis augmentum et, ut mereamur assequi, quod promittis, fac nos amare quod praecipis.  Per".

1973 ICEL:  "Almighty and ever-living God, strengthen our faith, hope, and love.  May we do with loving hearts what you ask of us and come to share the life you promise.  We ask this through".

BCP 1549 (which double-check):  "ALMIGHTYE and everlastyng God, geve unto us the increase of faythe, hope, and charitie; and that we may obteine that whiche thou doest promise; make us to love that whiche thou doest commaunde, through".

For more detail on this one, go here.