2 Corinthians 10:4-5 (For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;) Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;
Prove All Things
We as Christians are to prove all things and to hold fast that which is good (1 Thessalonians 5:21) if we hear something which doesn’t agree with God’s word then we are to reject it, for God cannot lie. Therefore we can conclude that anything that’s against God’s word is a lie straight from satan himself the father of lies (John 8:44).
If the Christadelphians truly believe in God’s word then they would have to agree on that point that God’s word is the final authority, not a man or group of men; but God Himself. That being said let us look at God’s word to see if the beliefs held by the Christadelphians concerning the Lord Jesus Christ and His knowledge is accurate or not.
Another point: God is all-knowing, Jesus learned (Luke 2:40, 52) during his life, which implicitly means acquiring knowledge or wisdom not previously possessed. In fact, there were some things Jesus never knew until after his resurrection – like the date of his return (Mrk 13:32). Traditional Christian thought (see above) has it that he never ceased to be God, so how did he learn? Did he just ‘forget’ for a while, while on earth? Did he later “remember” that he was omniscient? Again, omniscience and humanity are mutually exclusive characteristics. And if you are omniscient, you can’t shed that quality temporarily. – Christadelphians
The problem with cults such as the Christadelphians is that they try to reduce the Lord Jesus to a mere human being. The carnal mind cannot comprehend the things of God (Romans 8:7) nor receive the Spirit of God because they are spiritually discerned (1 Corinthians 2:14). The mistake the Christadelphians make is that they refused the deity of Christ but they are more than willing to accept the humanity of Christ, this is common among the cults. More on the Christadelphians beliefs.
The Two Natures of Christ
Any group which believes that Jesus Christ is a created being falls into this grave error because they have adopted the Arianism heresy. The true biblical Jesus Christ of the bible has 2 natures. He always existed as God because He (Jesus) is the Word or the Logos from the Greek. Here’s the Greek text which is very precise and powerful.
1:1 Ἐν ἀρχῇ ἦν ὁ λόγος καὶ ὁ λόγος ἦν πρὸς τὸν θεόν καὶ θεὸς ἦν ὁ λόγος
The Greek text reads “In the beginning was the Word and the Word was toward the God and God was the Word”
Additionally, the epistle written to the Philippians is also a great text which proves both that the Lord Jesus was fully God and fully man.
Philippians 2:5-6 Let this mind be in you, which was also in Christ Jesus: Who, being in the form of God, thought it not robbery to be equal with God:
2:5 τοῦτο γὰρ φρονείσθω ἐν ὑμῖν ὃ καὶ ἐν Χριστῷ Ἰησοῦ
2:6 ὃς ἐν μορφῇ θεοῦ ὑπάρχων οὐχ ἁρπαγμὸν ἡγήσατο τὸ εἶναι ἴσα θεῷ
this for LET-BE-beING-Disposed In You Which and In Anointed Jesus WHO IN FORM OF-God belongING NOT Snatching Deems The To-Be Equal to God.
The rest of those verses tell us what Jesus Christ did while He was still God.
Philippians 2:7-8 But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men: And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
He took on the form of a servant and humbled Himself going to the cross paying for our sins that we could have eternal life. Those verses in Philippians shows forth both natures of the Lord Jesus, He being both fully God and fully man. Jesus Christ as the man was at times hungry (Luke 24:41-43) and wearied or tired (John 4:6), He didn’t know the hour because of the human nature of the Lord Jesus. But that in no way negates the fact that He’s God in the flesh (1 Timothy 3:16).
The Christadelphians cannot understand this they place God in a box and are saying He can’t be both; God can do anything He wishes, you and I cannot. It’s not hard to understand that God came in the likeness of sinful flesh (Romans 8:3).
As for the Lord Jesus’s knowledge as God. The disciples clearly said He (Jesus) knows all things. Did Jesus ever rebuke the disciples saying no He doesn’t know all things? No, He did not. Because He clearly did, this is why Christ could tell Simon Peter “thou shalt deny me thrice” (Matthew 26:34, Mark 14:30, Luke 22:61). Peter remembered this after he did deny the Lord (Matthew 26:75) no mere man can do the things the Lord Jesus can. Here are the supporting scriptures proving Christ knew all things.
John 16:30 Now are we sure that thou knowest all things, and needest not that any man should ask thee: by this we believe that thou camest forth from God.
John 21:17 He saith unto him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said unto him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith unto him, Feed my sheep.
As for why the Lord Jesus said He didn’t know the hour only further proves the Triune Godhead (Trinity). The Father reserves certain things unto Himself, the Father, the Son and the Holy Ghost are all co-equal and co-eternal but it also displays the distinct persons in the Godhead as being the one true God. I know that may be hard for Christadelphians to understand but it’s true. And the reason why they don’t understand it is that they’re not saved. Just like Mormons, Jehovah Witnesses and Unitarians. If you trust in a God that’s different from the God of the bible you just cannot have salvation; and if you’re not saved how can you know God? You just cannot.
Mark 13:32 But of that day and that hour knoweth no man, no, not the angels which are in heaven, neither the Son, but the Father.
The Father the Son and the Holy Spirit all have different roles. The Father calls or draws the sinner to His Son Jesus Christ, the Lord Jesus redeems the sinner by the sacrifice on the cross covering our sins by His blood and the Holy Spirit indwells the believer sealing him unto that day marking those who have received salvation and signifying those individuals who are redeemed and belong to God; empowering us to live a life pleasing to God through His Spirit.
Ephesians 1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
Revelation 7:3 Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads.