If I drop out the duplicate references to the kingdom from Matthew and Mark, this is what is left for me to do and be a part of it:
- Preach the good news of it, like Jesus (Luke 4:43)
- Proclaim the good news of it, like Jesus (Luke 8:1)
- Preach the kingdom, like the disciples (Luke 9:2)
- Speak to others about it, like Jesus (Luke 9:11)
- Proclaim it, though grieving (Luke 9:60)
- Go preach, and don't look back (Luke 9:62)
- Preach it when you're not welcome (Luke 10:11)
- Seek it (Luke 12:31)
- Receive it (Luke 12:32)
- Preach it, like John (Luke 16:16)
- Recognize it within yourself / among yourselves (Luke 20:17-21)
- Accept it (Luke 22:29)
If I'm not mistaken, that's more than the number of total citations I found in Mark (12-11). These are all unique to Luke; they don't even count the duplicates.
Did you sense a recurrent theme? (What's that "p" word again?)
Can there be any doubt that Luke is the "preach"-quel to Acts?