"The Lord of hosts has sworn, saying,
'Surely, as I have thought, so it shall come to pass, And as I have purposed, so it shall stand.'" Isaiah 14:24

There are four things in this passage we can see in Scripture concerning the LORD Almighty in fulfilling His plan:
God's oaths (solemn promises)
God's thought (planned, resolved)
God's counsel (purpose),
God's immutability (unchangeableness).

God's oaths (There are many, but I will share only a very few.) We find in the Old Testament-- A promise to Abraham:
"...By Myself I have sworn, says the LORD, because you have done this thing, and have not withheld your son, your only son, in blessing I will bless you, and in multiplying I will multiply your descendants as the stars of heaven and as the sand which is on the seashore; and your descendants shall possess the gate of their enemies." Genesis 22:16-17

God's covenant with David:
"And your house and your kingdom shall be established forever before you. Your throne shall be established forever." Vs. 16 (Read 2 Samuel 7:4-16 for the picture of God's promise to David)

The Messianic priesthood:
"The LORD has sworn
And will not relent,
'You are a priest forever
According to the order of Melchizedek.'
The LORD is at Your right hand..." Psalm 110:4-5

These oaths are filled in the New Testament-- In Christ's birth:
"Blessed is the LORD God of Israel,
For He has visited and redeemed His people, And has raised up a horn of salvation for us In the house of His servant David.
To remember His holy covenant,
The oath which He swore to our father Abraham." Luke 1:68-73 (Read fully the verses in this passage.)

The kingship on David's throne:
"He will be great, and will be called the Son of the Highest; and the LORD God will give Him the throne of His father David. And He will reign over the house of Jacob forever, and of His kingdom there will be no end."
Luke 1:31-32

And Christ's priesthood:
"And inasmuch as He was not made priest without and oath (for they have become priests without an oath, but He with an oath by Him who said to Him:
'The LORD has sworn
And will not relent,
You are a Priest forever
According to the order of Melchizedek')" Hebrews 7:20-21 Vs. 22 says, "By so much more Jesus has become a surety (guarantee) of a better  covenant." (Read Hebrews 8:6)

God's thoughts: (Here again I will only include a couple.) "For My thoughts are not your thoughts, Nor are your ways My ways, says the LORD.
For as the heavens are higher than the earth, So are My ways higher than your ways, And My thoughts than your thoughts." Isaiah 55:8-9

God's thoughts to the Believer are precious:
"How precious also are Your thoughts to me, O God How great is the sum of them!
If I should count them, they would be
more in number than the sand." Psalm 139:17-18

Always, with each message, my hope is that we each will do a personal study.

Oh precious Holy God how we love and adore You! Help us to give You the honor, praise and worship that gives blessing and joy to Your heart. Amen