Excerpt from A.W. Pink:
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"Take no thought for your life, what ye shall eat, or what ye shall drink; nor yet for your body, what ye shall put on. Is not the life more than meat, and the body than raiment?" (v. 25). Here is the first of seven reasons or arguments used by Christ on this occasion to show us how foolish, how needless, how useless, how sinful, are anxious thoughts and distracting fears over the supply of our temporal needs. It is an inference drawn from the greater to the less: an argument frequently made use of in Scripture, but one, alas, that we easily forget—see the "much more" of Romans 5:9, 10, 15. It is an argument based upon the infinite goodness and unchanging faithfulness of our Creator: God Himself has given us life and a body, and He does not stop half-way in His bestowments: when He implants life, He also grants all that is needful for its sustenance. When God gives, He gives royally and liberally, honestly and sincerely, logically and completely. Therefore we may rest assured that when He bestows life itself, He is not going to stultify His own gift by withholding anything that is needful for our good and blessing. "Behold the fowls of the air: for they sow not, neither do they reap, nor gather into barns; yet your heavenly Father feedeth them, Are ye not much better than they?" (v. 26). These words contain Christ’s second reason to dissuade us from distrustful care about things needful. It is taken from the consideration of God’s providing for creatures inferior to us, His supplying needful things for them. It was as though the Redeemer said, Do you want further assurance that God will provide for all your temporal needs? Then lift up your eyes to the air and mark its feathered inhabitants as they flit to and fro, free from anxiety, filling the atmosphere with their cheerful songs. Oh, how they should show us, who are so often distrustful and despondent, how much more cause have we to celebrate the goodness of our gracious God and show forth His praises. Yet it is much to be feared that He receives less acknowledgment from us, fewer expressions of gratitude, than He does from those creatures upon whom He has bestowed the feeblest endowment.
"Behold the fowls of the air:" that is, take a serious view of, thoughtfully contemplate them. From this we learn that it is our duty duly to consider the works of God, laboring to behold His wisdom, goodness, power, mercy and providence therein. This is the lesson inculcated by Solomon: "Consider the work of God" (Eccl. 7:13), and by Eliphaz, "Remember that thou magnify His work, which men behold" (Job 36:24). God has revealed Himself through His works as truly as He has through His Word, and we are greatly the losers if we fail to examine carefully and ponder prayerfully the wonders of creation, wherein the Divine perfections are so blessedly displayed. "O Lord, how manifold are Thy works! in wisdom hast Thou made them all: the earth is full of Thy riches" (Ps. 104:24). "The works of the Lord are great, sought out of all them that have pleasure therein . . . He hath made His wonderful works to be remembered" (Ps. 111:2. 4). "Marvellous are Thy works, and that my soul knoweth right well" (Ps. 139:14).'