Translation of "marvellous" into Latin

Who can measure the marvels of grace wrought in human hearts?

Quis gratiae mirabilia, quae in cordibus facta sunt, metiri potest?

A sentiment can be a marvellous first spark, but it is not the fullness of love.

Affectio mira potest esse initialis scintilla, sed non totum amorem complectitur.

To these generous souls is due, beyond a doubt, the marvelous growth of our missions since the beginning of this century.

Hisce generosis spiritibus profecto debentur mirifica rei missionalis incrementa, quae a primordiis volventis huius saeculi habita sunt.