turn from the sin of worry

"Jacob's spiritual heirs in the twentieth century can know the same happy carefree life, if only they in their turn will believe in the promises of God which are designed to make His services a joyous freedom from the sin of worry: 'Fear ye not therefore, ye are of more value than many sparrows.' 'The very hairs of your head are all numbered.' 'Seek ye first the kingdom of God and his righteousness, and all these things shall be added unto you.'"