Philippians 4:6 -- Be careful for nothing; but in every thing by prayer and supplication with thanksgiving let your requests be made known unto God.
The negative stated and excluded. "Be careful for nothing..." "Careful" here means to be full of cares -- worry, doubt, fear, anxiety. The Christian should not live a life filled with anxious cares. "For nothing" excludes it from all cases. How can we remove our doubts in the present and not worry over the future? By casting all our care on our Heavenly Father. He cares for us. Thus we see...
The positive stated and enjoined. "...in every thing...let your requests be made known unto God." Things we encounter in life are "too big" for us to carry. But nothing is too big for God! Prayer acknowledges our helpfulness and God's power. In everything -- in all cases -- we should pour out our requests before God. With thanksgiving we acknowledge His kind care over us thus far, and know it will continue.
Thus far the Lord hath led me on
Thus far His power prolongs my days;
And every evening shall make known
Some fresh memorial of His grace.