“Boast not thyself of to morrow; for thou knowest not what a day may bring forth.” Proverbs 27:1 (KJB)
“Jesus Christ the same yesterday, and to day, and for ever.” Hebrews 13:8 (KJB)
Jesus Christ the second member of the Holy Trinity, the Son of God, God the Son is Immutable just as the whole of the Godhead.
This verse is referring back to verse 7, and prepping the reader for verse 9. This is the same Jesus Christ who worked in the Old Testament; died, was buried, and rose again according to the gospels; ascended into Heaven; and He lives forevermore.
The following commentary is from the Jamieson, Fausset, and Brown Commentary…
“This verse is not, as some read it, in apposition with “the end of their conversation” (Heb_13:7), but forms the transition. “Jesus Christ, yesterday and to-day (is) the same, and (shall be the same) unto the ages (that is, unto all ages).” The Jesus Christ (the full name being given, to mark with affectionate solemnity both His person and His office) who supported your spiritual rulers through life even unto their end “yesterday” (in times past), being at once “the Author and the Finisher of their faith” (Heb_12:2), remains still the same Jesus Christ “to-day,” ready to help you also, if like them you walk by “faith” in Him. Compare “this same Jesus,” Act_1:11. He who yesterday (proverbial for the past time) suffered and died, is to-day in glory (Rev_1:18). “As night comes between yesterday and to-day, and yet night itself is swallowed up by yesterday and to-day, so the “suffering” did not so interrupt the glory of Jesus Christ which was of yesterday, and that which is to-day, as not to continue to be the same. He is the same yesterday, before He came into the world, and to-day, in heaven. Yesterday in the time of our predecessors, and to-day in our age” [Bengel]. So the doctrine is the same, not variable: this verse thus forms the transition between Heb_13:7 and Heb_13:9. He is always “the same” (Heb_1:12). The same in the Old and in the New Testament.”
“From where come wars and fightings among you? Come they not from this, of your lusts that war in your members? You lust, and have not: you kill, and desire to have, and cannot obtain: you fight and war, yet you have not, because you ask not. You ask, and receive not, because you ask amiss, that you may consume upon your lusts.
You adulterers and adulteresses, know you not that the friendship of the world is enmity with God? Whosoever therefore will be a friend of the world is the enemy of God. Do you think that the Scripture says in vain, ‘The spirit that dwells in us lusts to envy?’ But He gives more grace. Wherefore He says, ‘God rejects the proud, but gives grace unto the humble.’
Submit yourselves therefore to God. Resist the devil, and he will flee from you. Draw near to God, and He will draw near to you. Cleanse hands, sinners; and purify hearts, double minded. Be afflicted, and mourn, and weep: let your laughter be turned to mourning, and joy to heaviness. Humble yourselves in the sight of the Lord, and He shall lift you up. Speak not evil one of another, brethren. He that speaks evil of brother, and judges his brother, speaks evil of the law, and judges the law: but if you judge the law, you are not a doer of the law, but a judge.
There is one Lawgiver, who is able to save and to destroy. Who are you that judges another?
Go to now, you that say, ‘To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain:’ you who do not know what shall be on the morrow. For what is your life? It is even a vapor, that appears for a little time, and then vanishes away. For that you ought to say, ‘If the Lord will, we shall live, and do this, or that.’ But now you rejoice in your boastings: all such rejoicing is evil. Therefore to him that knows to do good, and does not, to him it is sin.” James 4:1-17
REFERENCES: Job 7:7; 22:29; Proverbs 3:34; Ephesians 4:27; 1 Peter 2:1; 5:9; Matthew 7:1; Romans 1:20; 2:1; Acts 18:21; Luke 12:47
But seek ye first the kingdom of God, and His righteousness; and all these things shall be added unto you. Take therefore no thought for the morrow: for the morrow shall take thought for the things of itself. Sufficient unto the day is the evil thereof.” Matthew 6:33-34 (KJV)
I find myself too much of the time wanting material things. I will not go into any of the details; they are probably some of the same things that you want.
What do I want for Christmas?
I want the kingdom of God, and His righteousness in my heart and life, because there is nothing in this world or this life that is eternal except God, His righteousness, and His kingdom.
Lord Jesus rule in my heart and life for Your Righteousness, and Your Kingdom.