What Paul wrote to the congregations in Philippi was a letter to people he loved, encouraging and thanking them for their increasing love for him and the rest of the Church. He shared with them some of his prayers for them.
He also prophesied a blessing over them, blessing them in response to the fact that they had blessed him. His response to “…your partnership in the gospel from the first day until now.” “…you are all partners with me in grace,” “…you have renewed your care for me.” “you did well by sharing with me in my hardship.” “…when I left Macedonia, no church shared with me in the matter of giving and receiving except you alone. For even in Thessalonica you sent gifts for my needs several times.” “I am fully supplied, having received from Epaphroditus what you provided – a fragrant offering, a welcome sacrifice, pleasing to God.”
His responding prophecy was, “And my God will supply all your needs according to His riches in glory in Christ Jesus.” (Philippians 4:19). It was not a promise from Yahweh to every tither. It was not a “promise to claim” that because I am a Christian, God is responsible to pay all my bills.
It was a blessing written by one believer to other believers. I am convinced that the lesson to learn from it is how to speak blessing over each other, and how to receive blessing that is spoken over us. When someone has blessed you, surrender your heart to the Holy Spirit to receive a faith-filled blessing to speak or declare over them. Ask Him outright what He would like to bless them with and agree with Him. When someone speaks a blessing over you, be intentional about receiving it and attaching your faith to it with “Amen” or something.