Matthew 6:33
33 But seek first God’s Kingdom, and his righteousness; and all these things will be given to you as well.
World English Bible (WEB)
On Matthew 6:33: the context of the call to "seek first God's Kingdom, and his righteousness," its place in a teaching about worry, and why it is tied to the question of priorities. Read it directly.
Matthew 6:33 is the high point of what Jesus says about worry in the Sermon on the Mount. Just before it there is talk of anxiety over food, drink and clothing, and of fretting about tomorrow.
The verse does not dismiss needs; it puts them in an order of priority. The word "first" is the real key here: the question is not which things to want, but which to place before the others.
You can move to the chapter below to see how the verse reads together with the wider teaching that calms worry. The related collection on money and contentment bridges to other verses on the same question of priorities.