Question

as you sow,so shall you reap expansion

Answer 1

It states that in present what you are doing will results in future. as if we sow a good seed it will surely become a good plant but if u sow a bad seed it will be a bad plant in future.
if u do good now you will surely get good in future as Good things happens to Good people .

Answer 2

just like if you sow a sapling and take good care of it, it grows into a healthy tree and provides you with fruits so that you can reap benefits, the same way whatever you do now will affect your future. it can also be said as karma. if you do good you will be able to reap the goodness in the coming age and if you set a trap for someone you will be paid back when the time is right. it means that man is responsible for the effect of his actions. if he does good only goodness will churn out in the long run.