1 Peter 1:23 “Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever.”
In Agriculture, before there can be a harvest, there must first be the sowing a seeds (planting). Every harvest begins with the sowing of the seed and the size of the harvest depends on the strength of the seed. If the seed is good, there is a bounty harvest but if it is bad, there would be a harvest but not as much. There are some seeds that are favorable to plant in some geographic regions but not in others, because they thrive under that particular weather.
The bible says the Word of God is an incorruptible seed. Every single word of God contains in itself the ability to carry out that which it has been sent to do. Just like the physical seed, the Word of God if planted firmly in our hearts guarantees a harvest. What now determines the size of the harvest is the ground to which it was planted.
In Mark 4:3-8, Jesus taught the parable of a sower who went out to sow, these seeds (which we now know is the Word of God) were sown. They fell on different ground which then in turn produced different results according to the ground to which it fell. Notice that the it was never mentioned that the seed was bad or did not produce, this is because every seed sown has the same capacity and ability to produce, what determined the harvest or result here was the ground to which it fell on (which is our hearts). Some fell on the road side, it was picked by birds (hearts that do not care about the Word of God would not receive). Another on the rock, even with that it still started budding (to show the ability it possesses) but because it did not the rock would not let its root in (a hardened heart), it dried up. Another seed fell amongst thorns, it began sprouting but because the condition was not favorable as there were many dangerous things co-existing with it, it was choked to death (a heart full of cares, worries, anxiety, fear, doubts etc). The last one fell on the good soil and produced but even at that, the production was still in sizes. This tells us that it is not automatic to get a hundred percent harvest even if your heart is a good ground, you still determine how much you want. It is still to the extent to which you can believe for.
When it comes to receiving from God, it is not the Word that is not powerful – the seed is Incorruptible but it is the heart that needs to be worked on.
Hebrews 4:2 “For unto us was the gospel preached, as well as unto them: but the word preached did not profit them, not being mixed with faith in them that heard it.”
The Messenger 