"Casting all your care upon Him, for He cares for you" (1 Peter 5:7).
"Then come two other most previous verses: “Be careful for nothing” (verse 6). That, as we all know, does not mean, “Be careless and unconcerned altogether about your family affairs and business matters, and work and labour for the Lord;” but, as we again and again have heard, it means, “Be anxious about nothing.” It is the great privilege of the child of God not to be anxious. And it is possible to attain to it even in this life; yea, in the midst of great difficulties, great trials. It can be attained to, it is attained to by not a few of the children of God. And, by the grace of God, I am one of those who for many a long year have not been anxious." FOR MORE THAN SEVENTY YEARS I HAVE NOT BEEN ANXIOUS. - George Muller
"Come unto me, all ye that labour and are heavy laden, and I will give you rest" (mATT. 11:28).
"“The peace of God!” – that calm, quiet, trustful state of heart which is called “the peace of God,” and which is so blessed that the greatest orator could not describe what it is except he knew it, the greatest poet in the world could not represent to us in poetry unless he knew it by experience, and the greatest painter could not represent on canvas what this peace of God is unless he knew it by happy experience. But it is to be known by every believer by the grace of God, and by the grace of God I have habitually enjoyed it for sixty years, and therefore because I know it is to be had while yet in the body, I affectionately beseech and entreat beloved brethren and sisters in Christ to aim at it, and it is to be obtained in the way that is stated before." - George Muller
"Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls" (mATT. 11:29).
"I have rolled my burdens on the Lord, and He has carried them for me. The result of that has been that “the peace of God, which passeth all understanding,” has kept my heart and mind. If we are anxious, it brings about a gloomy look, and a gloomy look greatly dishonours God and greatly deters the unconverted from seeking after the Lord, for they say to themselves: “That man, that woman, is just as miserable as I am when I am in trouble.” But when they see we are in heavy trial, in heavy affliction, and yet there is found a cheerful look about us, our very look is an encouragement to the unconverted, and also strengthens the hands of our follow-believers in God. And, therefore, beloved, let us aim at this, that we be not anxious. As I stated: It is to be obtained, but we cannot obtain it by own resolutions, by our saying to ourselves – “I will go through it bravely.” We have in our weakness and helplessness to roll our burdens on God, then it is brought about that we have the peace of God." - George Muller
No anxiety ought to be found in the believer. Great, many and varied may be our trials, our afflictions, our difficulties, and yet there should be no anxiety under any circumstances, because we have a Father in Heaven Who is almighty, Who loves His children as He loves His only-begotten Son, and Whose very joy and delight it is to succor and help them at all times and under all circumstances. We should attend to the word, “in nothing be anxious, but in everything by prayer and supplication with thanksgiving, let your requests be made known unto God.” “In everything,” that is not merely when the house is on fire, not merely when the beloved wife and children are on the brink of the grave, but in the smallest matters of life, bring everything before God, the little things, the very little things, what the world calls trifling things – everything – living in holy communion with our Heavenly Father and with our precious Lord Jesus all the day long. And when we awake at night, by a kind of spiritual instinct again turning to Him, and speaking with Him in the sleepless night, the difficulties in connection with the family, our trade, our profession. Whatever tries us in any way, speak to the Lord about it. “By prayer and supplication,” taking the place of beggars, with earnestness, with perseverance, going on and waiting, waiting, waiting on God. “With thanksgiving.” We should at all times lay a good foundation with thanksgiving. If everything else were wanting, this is always present, that He has saved us from hell. Then, that He has given us His Holy Word – His Son, His choicest Gift – and the Holy Spirit. Therefore we have abundant reason for thanksgiving. O let us aim at this! “And the peace of God which passeth all understanding, shall keep your hearts and minds in Christ Jesus.” And this is so great a blessing, so real a blessing, and so precious a blessing, that it must be known experimentally to be entered into, for it passeth understanding. O let us lay these things to heart, and the result will be, if we habitually walk in this spirit, we shall far more abundantly glorify God, then as yet we have done. George Muller, from his book “The Life of Trust”