All things bear record · 1 Corinthians
3 witnesses of Christ here.
For I determined not to know any thing among you, save Jesus Christ, and him crucified. 1 Corinthians 2:2
Paul focuses his whole message on Jesus Christ and His crucifixion.
How we know: the verse itself names Him · a footnote points to Him · a Church study aid lists it
Lord of glory — the Lord to whom all glory belongs
But we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory: 1 Corinthians 2:7–8
God's plan, set before the world was made, centered on Christ. The rulers who crucified Jesus did not understand that they were crucifying the Lord of glory Himself.
How we know: a footnote points to Him · a Church study aid lists it
Jehovah — the covenant name, rendered LORD
For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ. 1 Corinthians 2:16
Paul quotes Isaiah's question about the mind of the LORD and answers it with 'the mind of Christ', treating the LORD of Isaiah as Christ. By the Spirit, Saints can come to think as Christ thinks.
How we know: the verse itself names Him