I have part of a piece of paper which reveals only the first word of
two sentences - the first sentence seems to be in English and the
second seems to be in french. It also seems that the sentences are of
a Christian religious nature.
The first sentence (English?)opens with the word and a letter - "-CAST T....."
The second sentence (French?)opens with the word - "-LANCER ......."
Is there a saying, prayer, phrase or expression that starts with these words?

Thanks for accepting my speculation as your official answer!

As I mentioned above, in French "lancer" means "to cast." Your French
quote may be a grammatically-altered translation of Ecclesiastes 11:1,
"Cast thy bread upon the waters; for thou shalt find it after many
days." One French site gives this version:

"Lance ton pain sur les eaux car avec le temps tu le retrouveras." 

Lueur: Archives
http://www.lueur.org/jourfoi/lire.php?jourfoi=20040528

Another site translates the passage thus:

"Lance ton pain sur l'eau, à la longue tu le retrouveras." 

La Bible de Jérusalem: Ecclésiaste  
http://www.biblia-cerf.com/BJ/qo11.html

As noted above, if the French version were to say "Lancer ton
pain...", the meaning would be "To cast thy bread..."

I hope I've helped to solve the mystery! 

Very best regards,
pinkfreud

Thanks pinkfreud. Seems you have solved the mystery!

In French, "lancer" means "to cast," so it seems likely that the
second sentence is a French translation of the first sentence.

One possibility is that the English is "Cast the first stone," and the
French is "Lancer la première pierre." This is a reference to John
8:7.

"He that is without sin among you, let him cast the first stone." 

http://www.ruf.rice.edu/~kemmer/Words04/history/bible.html

"Laissez celui qui parmi vous est sans péchés être le premier à lui
lancer la première pierre."

http://www.bladi.net/forum/29797-vrai-message-jesus-christ.html

Without further clues, I don't see how there can be any certainty.

Thanks pinkfreud-ga but it would seem that the sentence will START
with these words and not be just a part of a sentence.
Unfortunately I have no more clues :-(
An additional $5.00 tip for a sentence that STARTS with these words.
Thanks!

Perhaps Ecclesiastes 11:1, "Cast thy bread upon the waters; for thou
shalt find it after many days."

pinkfreud-ga,
That sounds better an is also in accordance with where I found the paper!
If the French Translation of this nice saying starts with the word
"Lancer" then please post as an answer.
Thanks!

Here is one French translation of Ecclesiastes 11:1.

"Lance ton pain sur les eaux car avec le temps tu le retrouveras." 

http://www.lueur.org/jourfoi/lire.php?jourfoi=20040528

"Lancer" means "to cast." So, if "lancer" were placed into the
sentence, the meaning would be "To cast thy bread upon the waters..."

ok! Please post.

Thank you very much for the five stars and the nice tip!

~pinkfreud

Just to add one more possibility (hopefully not to muddy the waters
with it), the phrase that came to my mind when I saw this was "Cast
all your cares upon him, for he cares for you." This phrase (with some
variations depending on translation used) is found in two places in
the Bible. In the Old Testament it's in Psalm 55:22, and in the New
Testament 1 Peter 5:7.

Thanks byrd!, but remember that the single letter I had after the word
"Cast" was a "t..." so it seems that the answer is as given by
pinkfreud.
Thanks anyway! :-)

Yup. You're right - I forgot about that "t." However, while it makes a
difference with regard to the 1st Peter passage, the Psalms one could
still be a match. I should have been more specific as to translations.
Here are a few examples --

"Cast thy burden upon the LORD, and he shall sustain thee." King James Version
"Cast thy care upon the Lord, and he shall sustain thee:..." Douay-Rheims Bible
"Cast thy burden upon the LORD, and He shall sustain thee." Third Millenium Bible

I used http://www.crosswalk.com to search for the passages. Like I
said, not trying to muddy those cast-upon waters, but just adding
another possibility.  :-)

Cheers,
Byrd-ga

Thanks again byrd!
:-))