People with “honest and good” hearts want to know the truth and live according to it.
The heart is more than a pump, the seat of our emotions mentioned almost 1,000 times in the New Testament.
Jesus told the parable of the sower in Luke 8:
4 When a great multitude came together, and people from every city were coming to him, he spoke by a parable. 5 “The farmer went out to sow his seed. As he sowed, some fell along the road, and it was trampled under foot, and the birds of the sky devoured it. 6 Other seed fell on the rock, and as soon as it grew, it withered away, because it had no moisture. 7 Other fell amid the thorns, and the thorns grew with it, and choked it. 8 Other fell into the good ground, and grew, and produced one hundred times as much fruit.” As he said these things, he called out, “He who has ears to hear, let him hear!”
9 Then his disciples asked him, “What does this parable mean?”
10 He said, “To you it is given to know the mysteries of God’s Kingdom, but to the rest in parables; that ‘seeing they may not see, and hearing they may not understand.’ 11 Now the parable is this: The seed is the word of God. 12 Those along the road are those who hear, then the devil comes, and takes away the word from their heart, that they may not believe and be saved. 13 Those on the rock are they who, when they hear, receive the word with joy; but these have no root, who believe for a while, then fall away in time of temptation. 14 That which fell among the thorns, these are those who have heard, and as they go on their way they are choked with cares, riches, and pleasures of life, and bring no fruit to maturity. 15 Those in the good ground, these are those who with an honest and good heart, having heard the word, hold it tightly, and produce fruit with perseverance.