There are several parables that deal with this.
The Parable of the Sower
Mark 4:1 And again He began to teach by the sea. And a great multitude was gathered to Him, so that He got into a boat and sat in it on the sea; and the whole multitude was on the land facing the sea.
v. 2 Then He taught them many things by parables, and said to them in His teaching:
v. 3 "Listen! Behold, a sower went out to sow.
v. 4 And it happened, as he sowed, that some seed fell by the wayside; and the birds of the air came and devoured it.
v. 5 Some fell on stony ground, where it did not have much earth; and immediately it sprang up because it had no depth of earth.
v. 6 But when the sun was up it was scorched, and because it had no root it withered away.
v. 7 And some seed fell among thorns; and the thorns grew up and choked it, and it yielded no crop.
v. 8 But other seed fell on good ground and yielded a crop that sprang up, increased and produced: some thirtyfold, some sixty, and some a hundred."
v. 9 And He said to them, "He who has ears to hear, let him hear!"
The Parable of the Wheat and the Tares
Mat 13:24 Another parable He put forth to them, saying: "The kingdom of heaven is like a man who sowed good seed in his field;
v. 25 but while men slept, his enemy came and sowed tares among the wheat and went his way.
v. 26 But when the grain had sprouted and produced a crop, then the tares also appeared.
v. 27 So the servants of the owner came and said to him, "Sir, did you not sow good seed in your field? How then does it have tares?'
v. 28 He said to them, "An enemy has done this.' The servants said to him, "Do you want us then to go and gather them up?'
v. 29 But he said, "No, lest while you gather up the tares you also uproot the wheat with them.
v. 30 Let both grow together until the harvest, and at the time of harvest I will say to the reapers, "First gather together the tares and bind them in bundles to burn them, but gather the wheat into my barn.""'
mercy, peace and love
Kat