Should I add Weapon Damage + Poison? Assuming I am tipping my weapon with poison with initially the intent of using the spear for range. But somehow manage to do a stabbing damage as well?

Damage Roll: 3. (I accidentally rolled a d4 earlier and had a roll of 2.)
Weapon is 1d3 + str Mod. = 3 + 7 = 10?

Knight should be dead if I'm calculating.