Acts 15:18 & Isa 46:10: God's plan known.
Connect Acts 15:18 with Isaiah 46:10 on God's foreknowledge and sovereignty.

The Early Church’s Confidence in God’s Eternal Plan – Acts 15:18

“‘says the Lord, who does these things that have been known for ages.’”

• The Jerusalem Council wrestled with the Gentile question, yet James rests his argument on this conviction: God already “knew” and “planned” every work “from ages past.”

• The statement acknowledges that what unfolded in their day—Gentiles turning to Christ—was not an improvisation but a chapter written in eternity.


Isaiah’s Declaration of the Same Sovereign Certainty – Isaiah 46:10

“‘I declare the end from the beginning, and ancient times from what is still to come. I say, “My purpose will stand, and all My good pleasure I will accomplish.”’”

• From the outset, the Lord sets both the opening and closing scenes of history.

• His “purpose” is unalterable; His “good pleasure” is unfailingly achieved.

• The verse roots God’s foreknowledge in His absolute sovereignty—He determines, therefore He foreknows.


A Seamless Thread of Foreknowledge and Sovereignty

• Same Speaker, Same Certainty

– Isaiah records God’s own words.

– James cites the prophetic word as God’s voice still speaking.

• Same Timeless Scope

– Isaiah: “from the beginning … ancient times … what is still to come.”

– Acts: “known for ages.”

• Same Unshakable Outcome

– Isaiah: “My purpose will stand.”

– Acts: a divine plan coming to pass in the inclusion of the nations.


How These Truths Steady Us Today

• Assurance in Salvation

Romans 8:29–30 affirms that those foreknown are also glorified. Our redemption rests on eternal certainty.

• Courage in Mission

Matthew 24:14; Revelation 7:9 show the global reach God already foresaw. Sharing the gospel joins a foreordained victory.

• Peace in Providence

Psalm 139:16: “all the days ordained for me were written in Your book before one of them came to be.” He foresaw every step; nothing catches Him by surprise.

• Hope in History

Daniel 4:35 reminds us that no one can thwart His hand. Nations rise and fall, yet His purpose stands as in Isaiah 46:10.


Additional Witnesses Underscoring the Theme

1 Peter 1:20 – Christ “was known before the foundation of the world.”

Ephesians 1:11 – We are “predestined according to the plan of Him who works out everything in conformity with the purpose of His will.”

Proverbs 19:21 – “Many plans are in a man’s heart, but the purpose of the LORD will prevail.”

The harmony between Acts 15:18 and Isaiah 46:10 anchors our faith: the God who rules history also writes it, and every promise He pens will come to pass exactly as He has foreknown from eternity.

How can Acts 15:18 encourage trust in God's plan during uncertain times?
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