Help me identify a song that includes "The morning is coming at last, the midnight has vanished"

I have many songs in my mind from my years in a Singapore Convent school (CHIJ, Convent of the Holy Infant Jesus) and I would like to revisit them and see more of their lyrics.

This one lovely verse is all that I can remember of a hymn from my youth in Singapore around 1968-1970:

The morning, the morning is coming at last,
The midnight has vanished, the darkness has passed,
So lift every petal with soft morning dew,
And laugh in the eyes of the little ones too...

I can still remember the tune which is really light and lilting. I'm so keen to identify it and to be reminded of the other lyrics!

Thank you for your help.

Best regards,

Anne