Bible Verses About Seed: Preaching the gospel

and he spake to them many things in similes, saying: `Lo, the sower went forth to sow,

which less, indeed, is than all the seeds, but when it may be grown, is greatest of the herbs, and becometh a tree, so that the birds of the heaven do come and rest in its branches.'

If we to you the spiritual things did sow--great is it if we your fleshly things do reap?