What does the Bible say about Christ being everything we need?

“Delight thyself also in the LORD: and he shall give thee the desires of thine heart. Commit thy way unto the LORD; trust also in him; and he shall bring it to pass.”

Psalm 37:4-5

“And ye are complete in him, which is the head of all principality and power:”

Colossians 2:10

“Blessed be the God and Father of our Lord Jesus Christ, which according to his abundant mercy hath begotten us again unto a lively hope by the resurrection of Jesus Christ from the dead,”

I Peter 1:3

“And we know that all things work together for good to them that love God, to them who are the called according to his purpose.”

Romans 8:28

“I can do all things through Christ which strengtheneth me.”

Philippians 4:13