While all may do with their own money as they see fit, it might be wise to investigate further before doing so. For example, can it be demonstrated that more money/land will not be required just to continue/complete the project?
If you need money to buy land to continue building, how are you going to pay for the continued building itself?
Is this lack of planning a rarity, or is the entire project just a poorly-thought-out black hole?
Modern clerics -- i.e., Traddieland's "heroes" -- are absolutely notorious for being practically clueless and unnecessarily wasteful. I would not give a single dime to any of them without first ascertaining the wisdom of a particular project and the track record of the cleric in charge. They are ALL vagus clerics and, as such, no one is obliged to give them anything.
Do as you see fit, of course, but I would not trust anyone that gets bent out of shape at such inquiries.