6:1 In the foregoing chapter our Lord particularly described the nature of inward holiness. In this he describes that purity of intention without which none of our outward actions are holy. This chapter contains four parts, The right intention and manner of giving alms, ver.1 -
4. The right intention, manner, form, and prerequisites of prayer, ver.5 - 15. The right intention, and manner of fasting, ver.16 - 18. The necessity of a pure intention in all things, unmixed either with the desire of riches, or worldly care, and fear of want, ver.19 - 34. This verse is a general caution against vain glory, in any of our good works: All these are here summed up together, in the comprehensive word righteousness. This general caution our Lord applies in the sequel to the three principal branches of it, relating to our neighbour, ver.2 - 4: to God, ver.5, 6: and to ourselves, ver.16 - 18. To be seen - Barely the being seen, while we are doing any of these things, is a circumstance purely indifferent. But the doing them with this view, to be seen and admired, this is what our Lord condemns.

Matthew 6:1 Parallel Commentaries

Consider the Lilies of the Field
(Preached on Easter Day, 1867.) MATTHEW vi. 26, 28, 29. 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? . . . And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin: and yet I say unto you, That even Solomon in all his glory was not arrayed like one of these. What has this text to do with Easter-day? Let us think …
Charles Kingsley—Discipline and Other Sermons

'Thy Kingdom Come'
'Thy kingdom come.--MATT. vi. 10. 'The Lord reigneth, let the earth be glad'; 'The Lord reigneth, let the people tremble,' was the burden of Jewish psalmist and prophet from the first to the last. They have no doubt of His present dominion. Neither man's forgetfulness and man's rebellion, nor all the dark crosses and woes of the world, can disturb their conviction that He is then and for ever the sole Lord. The kingdom is come, then. Yet John the Baptist broke the slumbers of that degenerate people …
Alexander Maclaren—Expositions of Holy Scripture

'Thy Will be Done'
'Thy will be done in earth, as it is in heaven.'--MATT. vi. 10. It makes all the difference whether the thought of the name, or that of the will, of God be the prominent one. If men begin with the will, then their religion will be slavish, a dull, sullen resignation, or a painful, weary round of unwelcome duties and reluctant abstainings. The will of an unknown God will be in their thoughts a dark and tyrannous necessity, a mysterious, inscrutable force, which rules by virtue of being stronger, and …
Alexander Maclaren—Expositions of Holy Scripture