The kingdom of the Son of Man (Matthew 13:41) is not distinct from the kingdom of the Father (Matthew 13:43), but the kingdom does have distinct phases. The period of Christ, who sows and tolerates, is followed by the period of the Father, who receives and lifts up, but it is one kingdom (Matthew 13:24) that is realized by the Son for the Father (see 1 Corinthians 15:23–28). In Matthew 13:38, the good seed are the children of the kingdom, so Jesus speaks of their Father.
When this kingdom is manifested, God will show himself as our Father, not just our Judge. The kingdom of the Father is the kingdom of the age
to come (aión: Matthew 13:39), which will begin when Jesus returns in glory: the kingdom in all its perfection (see 1 Corinthians 15:24).
The kingdom of the Son of Man (Matthew 13:41) cannot be separated from the kingdom of the heavenly Father (Matthew 13:43). There are, however, distinct periods in this kingdom. The period of Christ, who sows and tolerates, is followed by the period of the Father, who receives and lifts up. But it is one kingdom of heaven (Matthew 13:24) that is realized by the Son for the Father (see 1 Corinthians 15:23–28).1
In Matthew 13:38 Jesus says that the good seed are the children of the kingdom. Therefore here he speaks of their Father.
The kingdom of the Father refers to the kingdom of the age to come (aión, see Matthew 13:39), which will begin when Jesus returns in glory.2
When this kingdom is manifested, God will reveal himself to be their Father, not merely their Judge. Here we see the kingdom in all its perfection (see 1 Corinthians 15:24).3
41 The Son of Man will send his angels, and they will gather out of his kingdom all causes of sin and all law-breakers,