Why is Philippians 4:13 written as "I can do all things through Christ which strengtheneth me"?
In a nutshell, the verse is referring to the power of Christ (His all encompassing love for us, and power through us), not just "the man" Jesus.
The bible tells us in multiple passages that Jesus IS God, and God is not a "who". He is far more than that; words cannot describe His Love and Power. The members of the Holy Trinity are individual "persons", but simply referring to any of them as a "who" would be limiting them or putting them in a box.
When I woke up today, the very first thing I heard God speaking to my heart was this verse. And it's interesting the way that God will bring into remembrance things that He's already told us at an earlier date, which I believe ultimately happens because His Holy Spirit wants to lead us into ALL truth (John 16:13).
He reminded me that "Christ" means "The Anointed One and His Anointing". So Philippians 4:13 could be spoken as "I can do all things through The Anointed One and His Anointing which strengthens me".
It's Him AND His Anointing (His Power) that strengthens us.
If there was ever a time that I need to see that verse manifested in my life, it's NOW!