The Truth of God is simple: it is about dying to live.
And Jesus answered them, saying, The hour is come, that the Son of man should be glorified. Verily, verily, I say unto you, Except a corn of wheat fall into the ground and die, it abideth alone: but if it die, it bringeth forth much fruit. He that loveth his life shall lose it; and he that hateth his life in this world shall keep it unto life eternal. (John 12:23-25 KJV)
Much of Jesus’s teachings were built around things familiar to man. Often He used various farming illustrations painting a vivid picture of biblical truth. Here He uses the idea of planting a seed which must die in the ground before it grows into a bountiful crop ready to eat.
Man certainly understands the process of planting seeds in the ground to grow and mature crops of food. This harvest satisfies their physical hunger providing plentiful food for their table. Most likely had faced times of famine when food was scarce and could identify with the natural growing process.
The gospel seed also has a growing and maturing process. After being sown it takes root in proper soil conditions inside man’s heart bringing death to self and an abundant bumper crop of life spiritually; blooming bountifully as God brings the increase according to His will.
In biblical times the crowds following Jesus were given God’s truth in familiar terms. This enabled many to come a personal relationship with the knowledge of the Truth of God being quickened spiritually alive. Jesus placed His truths on the bottom shelf, within easy reach of many eager spiritually thirsty souls.