This verse Says "all things".   
That makes it a broad inclusive promise.   

It Says "for Life ".   
Life covers every aspect of our existence in terms of the physical and spiritual.   

This verse Says "for...   godliness ".   
Godliness covers everything related to spirituality , morality , salvation , power and eternity.   

The question becomes: "What did God leave out?"

The answer is "Nothing!" .   

Delight thyself also in the Lord: and he shall give thee the desires of thine heart. Psm 37:4

For the Lord is a sun and shield: the Lord will give grace and glory: no good thing will he withhold from them that walk uprightly. Psm 84:11

Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them. Mar 11:24

How do we access this provision?   

Answer: "through the knowledge of Him that hath called us to glory and virtue "

If your knowledge of Christ does not leave you with an expectation of glory and virtue it is severely lacking.   

The provision of God is complete, perfect.   

That the man of the Lord may be perfect, throughly furnished unto all good works. 2Ti 3:17

So, the purpose of God`s provision is that we are perfect and so empowered to bless others.   

And the way we access God`s provision is by the knowledge of Jesus Christ as revealed in the scriptures.   

Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me. Joh 5:39

When we search the scriptures we receive knowledge of Christ and so our Faith is increased by which we access God`s provision.