Isaac reaped an incredible hundredfold. Was it just good soil, or something more?
The verse clearly states, 'The LORD blessed him.' This isn't just a concluding remark; it's the reason for Isaac's astonishing harvest.
While Isaac's labor in sowing was essential, the 'hundredfold' increase was a direct result of God's blessing. This supernatural abundance wasn't earned by Isaac's effort alone, but by God's favor upon him, especially as he obeyed God's word to stay in the land despite the famine and the initial fear he had.
This teaches us that our efforts, while important, are empowered and magnified by God's blessing. True fruitfulness, especially when it exceeds all natural expectations, originates from Him.