Knowing the truth is only half the battle.

Knowing the truth is important but it's only half the battle. A medical expert may know all there is to know about a certain disease but it is of no use if he misapplies his knowledge. If he treats you with all his expertise but you have some other disease not his speciality, it will do you no good. Rather, it may do you harm. So it's not enough to know that God is just, we need to know how that justice is worked out – and we have to say that it's not always as straightforward as we may expect. We must believe God is just – it is a core biblical doctrine. However, it will not always be obvious that God is being just in the way that he acts towards individuals.

A theological argument against worrying - God's omniscience

Luke 12:30 ends and your Father knows that you need them (food, clothes, etc). What a powerful argument that is. If only we could remember that whatever we are worrying about, God knows exactly what the need is, how he will meet it and every other circumstance. God is omniscient – he knows everything. To worry about things really makes no sense at all. It is like a young child in the UK lying awake at night worrying about whether his parents will remember to give him breakfast or whether they will remember to put clothes on him. Of course they will! (Certainly in nearly all the cases we know anything about). In a similar way, we need not fear that God will ignore us or neglect us. He will do everything that needs to be done.