Its an assault on Gods Power, Wisdom, Love, everything about God to teach that things He wills to happen wont happen !
No it isn't. HE gave the analogy of the wheat and tares. HE did! READ IT!
Matthew 13:24-30
24 Another parable He put forth to them, saying: “The kingdom of heaven is like a man who sowed good seed in his field; 25 but while men slept,
his enemy came and sowed tares among the wheat and went his way. 26 But when the grain had sprouted and produced a crop, then the tares also appeared. 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?’ 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?’ 29 But he said,
‘No, lest while you gather up the tares you also uproot the wheat with them. 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.” ’ ”
Parable explained:
Matthew 13:36-43
36 Then Jesus sent the multitude away and went into the house. And His disciples came to Him, saying, “Explain to us the parable of the tares of the field.”
37 He answered and said to them: “He who sows the good seed is the Son of Man. 38 The field is the world, the good seeds are the sons of the kingdom, but the tares are the sons of
the wicked one. 39
The enemy who sowed them is the devil, the harvest is the end of the age, and the reapers are the angels. 40 Therefore as the tares are gathered and burned in the fire, so it will be at the end of this age. 41 The Son of Man will send out His angels, and they will gather out of His kingdom all things that offend, and those who practice lawlessness, 42 and will cast them into the furnace of fire. There will be wailing and gnashing of teeth. 43 Then the righteous will shine forth as the sun in the kingdom of their Father. He who has ears to hear, let him hear!
Matthew 13:18-23
18 “Therefore hear the parable of the sower: 19 When anyone hears the word of the kingdom, and does not understand
it, then the wicked one comes and snatches away what was sown in his heart. This is he who received seed by the wayside. 20 But he who received the seed on stony places, this is he who hears the word and immediately receives it with joy; 21 yet he has no root in himself, but endures only for a while. For when tribulation or persecution arises because of the word, immediately he stumbles. 22 Now he who received seed among the thorns is he who hears the word, and the cares of this world and the deceitfulness of riches choke the word, and he becomes unfruitful. 23 But he who received seed on the good ground is he who hears the word and understands
it, who indeed bears fruit and produces: some a hundredfold, some sixty, some thirty.”
"insult to" "assault upon" 
