What is the meaning of Matthew 6:33?

Matthew 6:33 KJV
But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.

Matthew 6:33 MKJV
But seek first the kingdom of God and His righteousness; and all these things shall be added to you.

Matthew 6:33 NKJV
“But seek first the kingdom of God and His righteousness, and all these things shall be added to you.

Matthew 6:33 KJV 2000
But seek you first the kingdom of God, and his righteousness; and all these things shall be added unto you.

Interlinear KJV

But /de/ seek ye /zeteo/ first /proton/ the kingdom /basileia/ of God, /theos/ and /kai/ his /autos/ righteousness; /dikaiosune/ and /kai/ all /pas/ these things /tauta/ shall be added /prostithemi/ unto you. /humin/

Albert Barnes’ Commentary

Verse 33. No Barnes text on this verse. See Barnes for Mt 6:32-34
{o} “seek ye first” 1Ti 4:8
{p} “shall be added” Le 25:20,21; 1Ki 3:13; Ps 37:25; Mr 10:30

British Family Bible

—  seek ye first &c. We here find clearly explained the whole meaning of this part of the chapter. It is not meant by any of these expressions that we should, in a literal sense, take no thought for our life or the means of supporting it, but that our thoughts are not to be wholly or principally occupied about these things. Christianity forbids no necessary occupations, no reasonable indulgences, no innocent relaxations. It allows us to use the world, provided we abuse it not. All that it requires is, that our liberty degenerate not into licentiousness, our amusements into dissipation, our industry into incessant toil, our carefulness into extreme anxiety and endless solicitude. Bp. Porteus.

and his righteousness; That righteousness which will render you acceptable in his sight. Dr. Whitby. This expression, “the kingdom of God, and his righteousness,” comprehends the whole business of religion; our last end, which is eternal life and happiness in another world, and the ways and means to this end, which is righteousness, that universal practice of virtue which God requires of us, and of which He himself is to us a pattern and an example. When we are required to seek these we are required to maintain a fixed design and resolution as to the end, incessant care and diligence as to the means, and to display an earnest zeal and persevering patience in the pursuit. But we are also required to seek these first, that is, to make them the main and principal design of our lives, so as to take place of every thing else in our esteem and affection, in our aim and endeavour; in comparison of these, we are to mind nothing else, neither the comforts and conveniences, nor even the necessaries of life. Abp. Tillotson.

and all these things shall be added unto you. From this promise we reasonably infer, that, generally speaking, God will bless the endeavours of the righteous, and of those that trust in Him; that when this happens otherwise, as sometimes must be the case, we may conclude, that what a righteous man loses on account of his religion, will, by the care of Providence, be made good to him in some other way; and that, at all events, his reward hereafter will be so much greater for any losses he may sustain here. Dr. S. Clarke.