Mat 13:44 Again, the kingdom of heaven is like unto a treasure hid in a field; the which when a man hath found, he hideth, and for joy thereof goeth and selleth all that he hath, and buyeth that field.
Jesus is the man, the treasure is the elect, and the field is the world (all men). The field does not belong to him, as all men are sold under sin. To obtain the treasure (the elect) hidden in this field (all men), he goes and sells all he has (his blood) and buys the entire field so he can obtain the treasure hidden in the field.
Mat 13:47 Again, the kingdom of heaven is like unto a net, that was cast into the sea, and gathered of every kind:
48 Which, when it was full, they drew to shore, and sat down, and gathered the good into vessels, but cast the bad away.
49 So shall it be at the end of the world: the angels shall come forth, and sever the wicked from among the just,
50 And shall cast them into the furnace of fire: there shall be wailing and gnashing of teeth.
Jesus here is the net, the sea is the world, and the fish of every kind is men. The net caught fish of every kind, Jesus's blood paid for all men's sins. Those who believe (the just) are kept, those who are evil and do not believe are cast away.