The LORD said to him: 'I have heard the prayer and plea you have made before Me; I have consecrated this temple, which you have built, by putting my Name there forever. My eyes and My heart will always be there.' 1 Kings 9:3
God can take the things we do and give them an eternal value.
We must always do our part with the full knowledge that the Lord will do His part.
We can do what is possible and then leave the impossible to Him.
Do what you need to do, but never be satisfied until it carries His favour and blessing.